/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-770125f [2021-05-21 20:22:15,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 20:22:15,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 20:22:15,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 20:22:15,400 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 [2021-05-21 20:22:15,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 20:22:15,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 20:22:15,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 20:22:15,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 20:22:15,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 20:22:15,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 20:22:15,428 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 20:22:15,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 20:22:15,429 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 20:22:15,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 20:22:15,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 20:22:15,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 20:22:15,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 20:22:15,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 20:22:15,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 20:22:15,430 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 20:22:15,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 20:22:15,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 20:22:15,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 20:22:15,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 20:22:15,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 20:22:15,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 20:22:15,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 20:22:15,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 20:22:15,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 20:22:15,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 20:22:15,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 20:22:15,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 20:22:15,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 20:22:15,433 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 20:22:15,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 20:22:15,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 20:22:15,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 20:22:15,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 20:22:15,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 20:22:15,803 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-21 20:22:15,805 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-21 20:22:15,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2021-05-21 20:22:15,806 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2021-05-21 20:22:15,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 20:22:15,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-21 20:22:15,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 20:22:15,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 20:22:15,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 20:22:15,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:22:15" (1/1) ... [2021-05-21 20:22:15,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:22:15" (1/1) ... [2021-05-21 20:22:15,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 20:22:15,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 20:22:15,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 20:22:15,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 20:22:15,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:22:15" (1/1) ... [2021-05-21 20:22:15,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:22:15" (1/1) ... [2021-05-21 20:22:15,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:22:15" (1/1) ... [2021-05-21 20:22:15,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:22:15" (1/1) ... [2021-05-21 20:22:15,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:22:15" (1/1) ... [2021-05-21 20:22:15,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:22:15" (1/1) ... [2021-05-21 20:22:15,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:22:15" (1/1) ... [2021-05-21 20:22:15,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 20:22:15,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 20:22:15,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 20:22:15,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 20:22:15,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:22:15" (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 [2021-05-21 20:22:15,968 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-05-21 20:22:15,968 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-05-21 20:22:15,968 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-05-21 20:22:15,969 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-05-21 20:22:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-05-21 20:22:15,969 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-05-21 20:22:15,969 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-05-21 20:22:15,969 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-05-21 20:22:15,969 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-05-21 20:22:15,969 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-05-21 20:22:15,970 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-05-21 20:22:15,970 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-05-21 20:22:15,970 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-05-21 20:22:15,970 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-05-21 20:22:15,970 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-05-21 20:22:15,970 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-21 20:22:15,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 20:22:15,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 20:22:15,971 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-05-21 20:22:15,971 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-05-21 20:22:15,971 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-05-21 20:22:15,972 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 20:22:16,111 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 20:22:16,111 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-21 20:22:16,113 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:22:16 BoogieIcfgContainer [2021-05-21 20:22:16,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 20:22:16,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 20:22:16,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 20:22:16,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 20:22:16,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:22:15" (1/2) ... [2021-05-21 20:22:16,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba94836 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 08:22:16, skipping insertion in model container [2021-05-21 20:22:16,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:22:16" (2/2) ... [2021-05-21 20:22:16,119 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2021-05-21 20:22:16,123 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 20:22:16,123 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 20:22:16,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 20:22:16,124 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 20:22:16,224 INFO L149 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2021-05-21 20:22:16,254 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-05-21 20:22:16,280 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 20:22:16,280 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 20:22:16,280 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 20:22:16,280 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 20:22:16,280 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 20:22:16,280 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 20:22:16,281 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 20:22:16,281 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 20:22:16,296 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions, 264 flow [2021-05-21 20:22:16,739 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) [2021-05-21 20:22:16,759 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) [2021-05-21 20:22:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:16,804 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:16,805 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:16,805 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]=== [2021-05-21 20:22:16,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:16,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1175608463, now seen corresponding path program 1 times [2021-05-21 20:22:16,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:16,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391322013] [2021-05-21 20:22:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:16,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:16,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391322013] [2021-05-21 20:22:16,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391322013] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:16,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:16,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:22:16,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151076658] [2021-05-21 20:22:17,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:22:17,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:17,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:22:17,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:22:17,047 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) [2021-05-21 20:22:17,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:17,152 INFO L93 Difference]: Finished difference Result 3545 states and 15330 transitions. [2021-05-21 20:22:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:22:17,153 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 [2021-05-21 20:22:17,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:17,194 INFO L225 Difference]: With dead ends: 3545 [2021-05-21 20:22:17,195 INFO L226 Difference]: Without dead ends: 3543 [2021-05-21 20:22:17,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:22:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-05-21 20:22:17,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2021-05-21 20:22:17,416 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) [2021-05-21 20:22:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 15328 transitions. [2021-05-21 20:22:17,443 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 15328 transitions. Word has length 25 [2021-05-21 20:22:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:17,444 INFO L482 AbstractCegarLoop]: Abstraction has 3543 states and 15328 transitions. [2021-05-21 20:22:17,445 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) [2021-05-21 20:22:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 15328 transitions. [2021-05-21 20:22:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:17,457 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:17,458 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] [2021-05-21 20:22:17,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 20:22:17,458 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]=== [2021-05-21 20:22:17,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:17,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1563685681, now seen corresponding path program 1 times [2021-05-21 20:22:17,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:17,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813262721] [2021-05-21 20:22:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:17,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:17,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813262721] [2021-05-21 20:22:17,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813262721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:17,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:17,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:22:17,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294730132] [2021-05-21 20:22:17,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:22:17,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:17,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:22:17,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:22:17,497 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) [2021-05-21 20:22:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:17,542 INFO L93 Difference]: Finished difference Result 2709 states and 11545 transitions. [2021-05-21 20:22:17,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:22:17,543 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 [2021-05-21 20:22:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:17,563 INFO L225 Difference]: With dead ends: 2709 [2021-05-21 20:22:17,563 INFO L226 Difference]: Without dead ends: 2709 [2021-05-21 20:22:17,564 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:22:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2021-05-21 20:22:17,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2709. [2021-05-21 20:22:17,742 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) [2021-05-21 20:22:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2709 states to 2709 states and 11545 transitions. [2021-05-21 20:22:17,757 INFO L78 Accepts]: Start accepts. Automaton has 2709 states and 11545 transitions. Word has length 25 [2021-05-21 20:22:17,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:17,758 INFO L482 AbstractCegarLoop]: Abstraction has 2709 states and 11545 transitions. [2021-05-21 20:22:17,759 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) [2021-05-21 20:22:17,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2709 states and 11545 transitions. [2021-05-21 20:22:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:17,768 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:17,768 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:17,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 20:22:17,768 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]=== [2021-05-21 20:22:17,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:17,769 INFO L82 PathProgramCache]: Analyzing trace with hash -817162979, now seen corresponding path program 1 times [2021-05-21 20:22:17,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:17,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026078134] [2021-05-21 20:22:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:17,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:17,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026078134] [2021-05-21 20:22:17,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026078134] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:17,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:17,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:22:17,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640284640] [2021-05-21 20:22:17,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:22:17,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:17,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:22:17,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:22:17,825 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) [2021-05-21 20:22:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:17,905 INFO L93 Difference]: Finished difference Result 2106 states and 8830 transitions. [2021-05-21 20:22:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:22:17,906 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 [2021-05-21 20:22:17,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:17,922 INFO L225 Difference]: With dead ends: 2106 [2021-05-21 20:22:17,922 INFO L226 Difference]: Without dead ends: 2106 [2021-05-21 20:22:17,923 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 [2021-05-21 20:22:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2021-05-21 20:22:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2021-05-21 20:22:18,026 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) [2021-05-21 20:22:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 8830 transitions. [2021-05-21 20:22:18,039 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 8830 transitions. Word has length 25 [2021-05-21 20:22:18,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:18,039 INFO L482 AbstractCegarLoop]: Abstraction has 2106 states and 8830 transitions. [2021-05-21 20:22:18,039 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) [2021-05-21 20:22:18,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 8830 transitions. [2021-05-21 20:22:18,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:18,047 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:18,048 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] [2021-05-21 20:22:18,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 20:22:18,048 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]=== [2021-05-21 20:22:18,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:18,049 INFO L82 PathProgramCache]: Analyzing trace with hash -407784791, now seen corresponding path program 1 times [2021-05-21 20:22:18,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:18,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708442287] [2021-05-21 20:22:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:18,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:18,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:18,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708442287] [2021-05-21 20:22:18,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708442287] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:18,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:18,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:22:18,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83781466] [2021-05-21 20:22:18,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:22:18,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:18,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:22:18,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:22:18,095 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) [2021-05-21 20:22:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:18,111 INFO L93 Difference]: Finished difference Result 1863 states and 7615 transitions. [2021-05-21 20:22:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:22:18,112 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 [2021-05-21 20:22:18,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:18,124 INFO L225 Difference]: With dead ends: 1863 [2021-05-21 20:22:18,125 INFO L226 Difference]: Without dead ends: 1863 [2021-05-21 20:22:18,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:22:18,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2021-05-21 20:22:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1863. [2021-05-21 20:22:18,225 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) [2021-05-21 20:22:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7615 transitions. [2021-05-21 20:22:18,232 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7615 transitions. Word has length 25 [2021-05-21 20:22:18,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:18,232 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7615 transitions. [2021-05-21 20:22:18,232 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) [2021-05-21 20:22:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7615 transitions. [2021-05-21 20:22:18,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:18,238 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:18,238 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] [2021-05-21 20:22:18,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 20:22:18,238 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]=== [2021-05-21 20:22:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:18,239 INFO L82 PathProgramCache]: Analyzing trace with hash 447521863, now seen corresponding path program 1 times [2021-05-21 20:22:18,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:18,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068017157] [2021-05-21 20:22:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:18,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:18,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068017157] [2021-05-21 20:22:18,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068017157] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:18,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:18,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:22:18,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504323045] [2021-05-21 20:22:18,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:22:18,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:18,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:22:18,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:22:18,260 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) [2021-05-21 20:22:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:18,277 INFO L93 Difference]: Finished difference Result 1458 states and 5833 transitions. [2021-05-21 20:22:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:22:18,278 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 [2021-05-21 20:22:18,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:18,303 INFO L225 Difference]: With dead ends: 1458 [2021-05-21 20:22:18,303 INFO L226 Difference]: Without dead ends: 1458 [2021-05-21 20:22:18,304 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:22:18,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-05-21 20:22:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1458. [2021-05-21 20:22:18,357 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) [2021-05-21 20:22:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5833 transitions. [2021-05-21 20:22:18,363 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5833 transitions. Word has length 25 [2021-05-21 20:22:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:18,364 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5833 transitions. [2021-05-21 20:22:18,364 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) [2021-05-21 20:22:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5833 transitions. [2021-05-21 20:22:18,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:18,368 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:18,368 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] [2021-05-21 20:22:18,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 20:22:18,369 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]=== [2021-05-21 20:22:18,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:18,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1957625315, now seen corresponding path program 1 times [2021-05-21 20:22:18,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:18,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338919086] [2021-05-21 20:22:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:18,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:18,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338919086] [2021-05-21 20:22:18,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338919086] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:18,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:18,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:18,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887074762] [2021-05-21 20:22:18,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:18,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:18,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:18,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:18,694 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) [2021-05-21 20:22:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:18,884 INFO L93 Difference]: Finished difference Result 3167 states and 11759 transitions. [2021-05-21 20:22:18,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:18,884 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 [2021-05-21 20:22:18,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:18,895 INFO L225 Difference]: With dead ends: 3167 [2021-05-21 20:22:18,896 INFO L226 Difference]: Without dead ends: 3008 [2021-05-21 20:22:18,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 213.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:18,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-05-21 20:22:18,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1530. [2021-05-21 20:22:18,968 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) [2021-05-21 20:22:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 6113 transitions. [2021-05-21 20:22:18,974 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 6113 transitions. Word has length 25 [2021-05-21 20:22:18,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:18,974 INFO L482 AbstractCegarLoop]: Abstraction has 1530 states and 6113 transitions. [2021-05-21 20:22:18,974 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) [2021-05-21 20:22:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 6113 transitions. [2021-05-21 20:22:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:18,978 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:18,978 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] [2021-05-21 20:22:18,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 20:22:18,979 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]=== [2021-05-21 20:22:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:18,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1329043997, now seen corresponding path program 2 times [2021-05-21 20:22:18,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:18,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705069991] [2021-05-21 20:22:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:19,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:19,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705069991] [2021-05-21 20:22:19,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705069991] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:19,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:19,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:19,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405208400] [2021-05-21 20:22:19,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:19,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:19,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:19,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:19,200 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) [2021-05-21 20:22:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:19,318 INFO L93 Difference]: Finished difference Result 3230 states and 11966 transitions. [2021-05-21 20:22:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:19,318 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 [2021-05-21 20:22:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:19,330 INFO L225 Difference]: With dead ends: 3230 [2021-05-21 20:22:19,330 INFO L226 Difference]: Without dead ends: 2976 [2021-05-21 20:22:19,333 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 [2021-05-21 20:22:19,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2021-05-21 20:22:19,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1498. [2021-05-21 20:22:19,413 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) [2021-05-21 20:22:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5985 transitions. [2021-05-21 20:22:19,419 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5985 transitions. Word has length 25 [2021-05-21 20:22:19,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:19,420 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5985 transitions. [2021-05-21 20:22:19,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:19,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5985 transitions. [2021-05-21 20:22:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:19,424 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:19,424 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:19,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 20:22:19,425 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]=== [2021-05-21 20:22:19,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:19,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1919010631, now seen corresponding path program 3 times [2021-05-21 20:22:19,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:19,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191588327] [2021-05-21 20:22:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:19,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:19,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191588327] [2021-05-21 20:22:19,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191588327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:19,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:19,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:19,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503773492] [2021-05-21 20:22:19,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:19,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:19,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:19,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:19,579 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) [2021-05-21 20:22:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:19,652 INFO L93 Difference]: Finished difference Result 3118 states and 11565 transitions. [2021-05-21 20:22:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:19,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:19,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:19,664 INFO L225 Difference]: With dead ends: 3118 [2021-05-21 20:22:19,664 INFO L226 Difference]: Without dead ends: 2959 [2021-05-21 20:22:19,665 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:19,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2021-05-21 20:22:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1514. [2021-05-21 20:22:19,750 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) [2021-05-21 20:22:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6033 transitions. [2021-05-21 20:22:19,756 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6033 transitions. Word has length 25 [2021-05-21 20:22:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:19,756 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 6033 transitions. [2021-05-21 20:22:19,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6033 transitions. [2021-05-21 20:22:19,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:19,760 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:19,760 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] [2021-05-21 20:22:19,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 20:22:19,760 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]=== [2021-05-21 20:22:19,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:19,761 INFO L82 PathProgramCache]: Analyzing trace with hash 786021915, now seen corresponding path program 4 times [2021-05-21 20:22:19,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:19,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644903554] [2021-05-21 20:22:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:19,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:19,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644903554] [2021-05-21 20:22:19,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644903554] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:19,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:19,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:19,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760796420] [2021-05-21 20:22:19,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:19,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:19,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:19,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:19,924 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) [2021-05-21 20:22:20,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:20,014 INFO L93 Difference]: Finished difference Result 3148 states and 11658 transitions. [2021-05-21 20:22:20,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:20,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:20,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:20,025 INFO L225 Difference]: With dead ends: 3148 [2021-05-21 20:22:20,026 INFO L226 Difference]: Without dead ends: 2943 [2021-05-21 20:22:20,026 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 155.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:20,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2021-05-21 20:22:20,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1498. [2021-05-21 20:22:20,094 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) [2021-05-21 20:22:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5977 transitions. [2021-05-21 20:22:20,100 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5977 transitions. Word has length 25 [2021-05-21 20:22:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:20,102 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5977 transitions. [2021-05-21 20:22:20,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5977 transitions. [2021-05-21 20:22:20,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:20,106 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:20,106 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] [2021-05-21 20:22:20,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 20:22:20,106 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]=== [2021-05-21 20:22:20,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:20,107 INFO L82 PathProgramCache]: Analyzing trace with hash 147858429, now seen corresponding path program 5 times [2021-05-21 20:22:20,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:20,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533155698] [2021-05-21 20:22:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:20,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:20,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533155698] [2021-05-21 20:22:20,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533155698] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:20,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:20,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:20,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858318888] [2021-05-21 20:22:20,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:20,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:20,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:20,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:20,309 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) [2021-05-21 20:22:20,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:20,412 INFO L93 Difference]: Finished difference Result 3258 states and 12063 transitions. [2021-05-21 20:22:20,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:20,440 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 [2021-05-21 20:22:20,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:20,454 INFO L225 Difference]: With dead ends: 3258 [2021-05-21 20:22:20,454 INFO L226 Difference]: Without dead ends: 3069 [2021-05-21 20:22:20,455 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 [2021-05-21 20:22:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-05-21 20:22:20,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 1561. [2021-05-21 20:22:20,521 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) [2021-05-21 20:22:20,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 6184 transitions. [2021-05-21 20:22:20,526 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 6184 transitions. Word has length 25 [2021-05-21 20:22:20,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:20,527 INFO L482 AbstractCegarLoop]: Abstraction has 1561 states and 6184 transitions. [2021-05-21 20:22:20,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:20,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 6184 transitions. [2021-05-21 20:22:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:20,531 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:20,531 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:20,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 20:22:20,531 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]=== [2021-05-21 20:22:20,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:20,532 INFO L82 PathProgramCache]: Analyzing trace with hash 445911387, now seen corresponding path program 6 times [2021-05-21 20:22:20,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:20,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104785029] [2021-05-21 20:22:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:20,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:20,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104785029] [2021-05-21 20:22:20,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104785029] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:20,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:20,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:20,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710119809] [2021-05-21 20:22:20,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:20,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:20,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:20,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:20,687 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) [2021-05-21 20:22:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:20,757 INFO L93 Difference]: Finished difference Result 3291 states and 12146 transitions. [2021-05-21 20:22:20,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:20,758 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 [2021-05-21 20:22:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:20,768 INFO L225 Difference]: With dead ends: 3291 [2021-05-21 20:22:20,768 INFO L226 Difference]: Without dead ends: 2982 [2021-05-21 20:22:20,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:20,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2021-05-21 20:22:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1474. [2021-05-21 20:22:20,832 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) [2021-05-21 20:22:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5889 transitions. [2021-05-21 20:22:20,837 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5889 transitions. Word has length 25 [2021-05-21 20:22:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:20,837 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5889 transitions. [2021-05-21 20:22:20,837 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) [2021-05-21 20:22:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5889 transitions. [2021-05-21 20:22:20,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:20,841 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:20,841 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] [2021-05-21 20:22:20,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-21 20:22:20,842 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]=== [2021-05-21 20:22:20,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:20,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1934855229, now seen corresponding path program 7 times [2021-05-21 20:22:20,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:20,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480977222] [2021-05-21 20:22:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:20,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:20,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480977222] [2021-05-21 20:22:20,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480977222] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:20,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:20,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:20,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861894174] [2021-05-21 20:22:20,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:20,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:20,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:20,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:20,995 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) [2021-05-21 20:22:21,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:21,066 INFO L93 Difference]: Finished difference Result 3140 states and 11663 transitions. [2021-05-21 20:22:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:21,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:21,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:21,077 INFO L225 Difference]: With dead ends: 3140 [2021-05-21 20:22:21,077 INFO L226 Difference]: Without dead ends: 2981 [2021-05-21 20:22:21,078 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:21,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2021-05-21 20:22:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1522. [2021-05-21 20:22:21,150 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) [2021-05-21 20:22:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 6073 transitions. [2021-05-21 20:22:21,157 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 6073 transitions. Word has length 25 [2021-05-21 20:22:21,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:21,157 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 6073 transitions. [2021-05-21 20:22:21,157 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) [2021-05-21 20:22:21,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 6073 transitions. [2021-05-21 20:22:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:21,161 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:21,161 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:21,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-21 20:22:21,162 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]=== [2021-05-21 20:22:21,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:21,162 INFO L82 PathProgramCache]: Analyzing trace with hash 926557245, now seen corresponding path program 8 times [2021-05-21 20:22:21,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:21,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787498560] [2021-05-21 20:22:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:21,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:21,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787498560] [2021-05-21 20:22:21,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787498560] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:21,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:21,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:21,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654800742] [2021-05-21 20:22:21,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:21,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:21,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:21,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:21,334 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) [2021-05-21 20:22:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:21,406 INFO L93 Difference]: Finished difference Result 3203 states and 11870 transitions. [2021-05-21 20:22:21,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:21,407 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 [2021-05-21 20:22:21,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:21,416 INFO L225 Difference]: With dead ends: 3203 [2021-05-21 20:22:21,416 INFO L226 Difference]: Without dead ends: 2949 [2021-05-21 20:22:21,416 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 155.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:21,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2021-05-21 20:22:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1490. [2021-05-21 20:22:21,479 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) [2021-05-21 20:22:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5945 transitions. [2021-05-21 20:22:21,484 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5945 transitions. Word has length 25 [2021-05-21 20:22:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:21,484 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5945 transitions. [2021-05-21 20:22:21,484 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) [2021-05-21 20:22:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5945 transitions. [2021-05-21 20:22:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:21,488 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:21,488 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:21,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-21 20:22:21,488 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]=== [2021-05-21 20:22:21,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:21,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1371078561, now seen corresponding path program 9 times [2021-05-21 20:22:21,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:21,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369849663] [2021-05-21 20:22:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:21,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:21,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369849663] [2021-05-21 20:22:21,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369849663] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:21,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:21,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:21,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686544794] [2021-05-21 20:22:21,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:21,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:21,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:21,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:21,644 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) [2021-05-21 20:22:21,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:21,716 INFO L93 Difference]: Finished difference Result 3089 states and 11464 transitions. [2021-05-21 20:22:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:21,716 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 [2021-05-21 20:22:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:21,726 INFO L225 Difference]: With dead ends: 3089 [2021-05-21 20:22:21,726 INFO L226 Difference]: Without dead ends: 2930 [2021-05-21 20:22:21,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 146.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:21,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-05-21 20:22:21,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1506. [2021-05-21 20:22:21,788 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) [2021-05-21 20:22:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5993 transitions. [2021-05-21 20:22:21,793 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5993 transitions. Word has length 25 [2021-05-21 20:22:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:21,793 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5993 transitions. [2021-05-21 20:22:21,793 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) [2021-05-21 20:22:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5993 transitions. [2021-05-21 20:22:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:21,797 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:21,797 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:21,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-21 20:22:21,797 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]=== [2021-05-21 20:22:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:21,798 INFO L82 PathProgramCache]: Analyzing trace with hash -362780577, now seen corresponding path program 10 times [2021-05-21 20:22:21,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:21,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13833550] [2021-05-21 20:22:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:21,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:21,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:21,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13833550] [2021-05-21 20:22:21,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13833550] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:21,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:21,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:21,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232443443] [2021-05-21 20:22:21,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:21,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:21,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:21,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:21,943 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) [2021-05-21 20:22:22,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:22,031 INFO L93 Difference]: Finished difference Result 3117 states and 11552 transitions. [2021-05-21 20:22:22,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:22,031 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:22,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:22,041 INFO L225 Difference]: With dead ends: 3117 [2021-05-21 20:22:22,041 INFO L226 Difference]: Without dead ends: 2914 [2021-05-21 20:22:22,043 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:22,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2021-05-21 20:22:22,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1490. [2021-05-21 20:22:22,108 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) [2021-05-21 20:22:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5937 transitions. [2021-05-21 20:22:22,113 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5937 transitions. Word has length 25 [2021-05-21 20:22:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:22,114 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5937 transitions. [2021-05-21 20:22:22,114 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) [2021-05-21 20:22:22,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5937 transitions. [2021-05-21 20:22:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:22,117 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:22,117 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] [2021-05-21 20:22:22,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-21 20:22:22,118 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]=== [2021-05-21 20:22:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:22,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1325465695, now seen corresponding path program 11 times [2021-05-21 20:22:22,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:22,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596021473] [2021-05-21 20:22:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:22,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:22,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596021473] [2021-05-21 20:22:22,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596021473] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:22,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:22,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:22,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520015538] [2021-05-21 20:22:22,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:22,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:22,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:22,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:22,287 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) [2021-05-21 20:22:22,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:22,368 INFO L93 Difference]: Finished difference Result 3210 states and 11906 transitions. [2021-05-21 20:22:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:22,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:22,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:22,377 INFO L225 Difference]: With dead ends: 3210 [2021-05-21 20:22:22,377 INFO L226 Difference]: Without dead ends: 3023 [2021-05-21 20:22:22,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 144.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:22,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2021-05-21 20:22:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1536. [2021-05-21 20:22:22,439 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) [2021-05-21 20:22:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 6094 transitions. [2021-05-21 20:22:22,445 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 6094 transitions. Word has length 25 [2021-05-21 20:22:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:22,445 INFO L482 AbstractCegarLoop]: Abstraction has 1536 states and 6094 transitions. [2021-05-21 20:22:22,445 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) [2021-05-21 20:22:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 6094 transitions. [2021-05-21 20:22:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:22,449 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:22,449 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:22,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-21 20:22:22,450 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]=== [2021-05-21 20:22:22,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:22,450 INFO L82 PathProgramCache]: Analyzing trace with hash 972326205, now seen corresponding path program 12 times [2021-05-21 20:22:22,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:22,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18271561] [2021-05-21 20:22:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:22,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:22,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:22,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18271561] [2021-05-21 20:22:22,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18271561] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:22,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:22,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:22,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106870796] [2021-05-21 20:22:22,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:22,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:22,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:22,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:22,587 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) [2021-05-21 20:22:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:22,663 INFO L93 Difference]: Finished difference Result 3245 states and 11995 transitions. [2021-05-21 20:22:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:22,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:22,672 INFO L225 Difference]: With dead ends: 3245 [2021-05-21 20:22:22,672 INFO L226 Difference]: Without dead ends: 2961 [2021-05-21 20:22:22,672 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-05-21 20:22:22,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1474. [2021-05-21 20:22:22,738 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) [2021-05-21 20:22:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5881 transitions. [2021-05-21 20:22:22,743 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5881 transitions. Word has length 25 [2021-05-21 20:22:22,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:22,743 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5881 transitions. [2021-05-21 20:22:22,743 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) [2021-05-21 20:22:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5881 transitions. [2021-05-21 20:22:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:22,747 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:22,747 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:22,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-21 20:22:22,748 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]=== [2021-05-21 20:22:22,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:22,748 INFO L82 PathProgramCache]: Analyzing trace with hash 296831769, now seen corresponding path program 13 times [2021-05-21 20:22:22,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:22,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769326916] [2021-05-21 20:22:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:22,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:22,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769326916] [2021-05-21 20:22:22,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769326916] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:22,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:22,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:22,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820145101] [2021-05-21 20:22:22,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:22,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:22,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:22,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:22,897 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) [2021-05-21 20:22:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:22,966 INFO L93 Difference]: Finished difference Result 3018 states and 11199 transitions. [2021-05-21 20:22:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:22,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:22,972 INFO L225 Difference]: With dead ends: 3018 [2021-05-21 20:22:22,972 INFO L226 Difference]: Without dead ends: 2859 [2021-05-21 20:22:22,973 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2021-05-21 20:22:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1498. [2021-05-21 20:22:23,041 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) [2021-05-21 20:22:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5965 transitions. [2021-05-21 20:22:23,046 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5965 transitions. Word has length 25 [2021-05-21 20:22:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:23,047 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5965 transitions. [2021-05-21 20:22:23,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:23,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5965 transitions. [2021-05-21 20:22:23,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:23,051 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:23,051 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] [2021-05-21 20:22:23,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-21 20:22:23,051 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]=== [2021-05-21 20:22:23,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:23,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1293102981, now seen corresponding path program 14 times [2021-05-21 20:22:23,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:23,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781736011] [2021-05-21 20:22:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:23,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:23,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781736011] [2021-05-21 20:22:23,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781736011] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:23,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:23,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:23,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597160880] [2021-05-21 20:22:23,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:23,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:23,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:23,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:23,195 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) [2021-05-21 20:22:23,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:23,283 INFO L93 Difference]: Finished difference Result 3048 states and 11292 transitions. [2021-05-21 20:22:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:23,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:23,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:23,291 INFO L225 Difference]: With dead ends: 3048 [2021-05-21 20:22:23,291 INFO L226 Difference]: Without dead ends: 2843 [2021-05-21 20:22:23,291 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:23,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2021-05-21 20:22:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 1482. [2021-05-21 20:22:23,357 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) [2021-05-21 20:22:23,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5909 transitions. [2021-05-21 20:22:23,362 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5909 transitions. Word has length 25 [2021-05-21 20:22:23,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:23,362 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5909 transitions. [2021-05-21 20:22:23,362 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) [2021-05-21 20:22:23,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5909 transitions. [2021-05-21 20:22:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:23,366 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:23,366 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:23,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-21 20:22:23,367 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]=== [2021-05-21 20:22:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:23,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1377894395, now seen corresponding path program 15 times [2021-05-21 20:22:23,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:23,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119932695] [2021-05-21 20:22:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:23,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:23,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119932695] [2021-05-21 20:22:23,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119932695] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:23,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:23,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:23,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204208150] [2021-05-21 20:22:23,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:23,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:23,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:23,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:23,528 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) [2021-05-21 20:22:23,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:23,604 INFO L93 Difference]: Finished difference Result 3016 states and 11186 transitions. [2021-05-21 20:22:23,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:23,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:23,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:23,612 INFO L225 Difference]: With dead ends: 3016 [2021-05-21 20:22:23,612 INFO L226 Difference]: Without dead ends: 2857 [2021-05-21 20:22:23,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 142.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2021-05-21 20:22:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1498. [2021-05-21 20:22:23,670 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) [2021-05-21 20:22:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5957 transitions. [2021-05-21 20:22:23,676 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5957 transitions. Word has length 25 [2021-05-21 20:22:23,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:23,676 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5957 transitions. [2021-05-21 20:22:23,676 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) [2021-05-21 20:22:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5957 transitions. [2021-05-21 20:22:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:23,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:23,679 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] [2021-05-21 20:22:23,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-21 20:22:23,679 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]=== [2021-05-21 20:22:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:23,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1908774917, now seen corresponding path program 16 times [2021-05-21 20:22:23,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:23,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164707493] [2021-05-21 20:22:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:23,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:23,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164707493] [2021-05-21 20:22:23,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164707493] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:23,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:23,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:23,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639841807] [2021-05-21 20:22:23,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:23,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:23,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:23,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:23,833 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) [2021-05-21 20:22:23,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:23,914 INFO L93 Difference]: Finished difference Result 3044 states and 11274 transitions. [2021-05-21 20:22:23,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:23,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:23,920 INFO L225 Difference]: With dead ends: 3044 [2021-05-21 20:22:23,920 INFO L226 Difference]: Without dead ends: 2841 [2021-05-21 20:22:23,920 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 142.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2021-05-21 20:22:23,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1482. [2021-05-21 20:22:23,971 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) [2021-05-21 20:22:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5901 transitions. [2021-05-21 20:22:23,977 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5901 transitions. Word has length 25 [2021-05-21 20:22:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:23,977 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5901 transitions. [2021-05-21 20:22:23,977 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) [2021-05-21 20:22:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5901 transitions. [2021-05-21 20:22:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:23,981 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:23,981 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:23,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-21 20:22:23,982 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]=== [2021-05-21 20:22:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:23,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1499910947, now seen corresponding path program 17 times [2021-05-21 20:22:23,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:23,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679477188] [2021-05-21 20:22:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:24,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:24,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679477188] [2021-05-21 20:22:24,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679477188] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:24,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:24,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:24,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752274576] [2021-05-21 20:22:24,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:24,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:24,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:24,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:24,112 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) [2021-05-21 20:22:24,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:24,191 INFO L93 Difference]: Finished difference Result 3090 states and 11455 transitions. [2021-05-21 20:22:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:24,191 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 [2021-05-21 20:22:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:24,198 INFO L225 Difference]: With dead ends: 3090 [2021-05-21 20:22:24,198 INFO L226 Difference]: Without dead ends: 2901 [2021-05-21 20:22:24,198 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:24,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2021-05-21 20:22:24,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1512. [2021-05-21 20:22:24,248 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) [2021-05-21 20:22:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5994 transitions. [2021-05-21 20:22:24,253 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5994 transitions. Word has length 25 [2021-05-21 20:22:24,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:24,253 INFO L482 AbstractCegarLoop]: Abstraction has 1512 states and 5994 transitions. [2021-05-21 20:22:24,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5994 transitions. [2021-05-21 20:22:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:24,257 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:24,257 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:24,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-21 20:22:24,257 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]=== [2021-05-21 20:22:24,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:24,258 INFO L82 PathProgramCache]: Analyzing trace with hash 751719355, now seen corresponding path program 18 times [2021-05-21 20:22:24,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:24,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594145178] [2021-05-21 20:22:24,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:24,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:24,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594145178] [2021-05-21 20:22:24,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594145178] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:24,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:24,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:24,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322312299] [2021-05-21 20:22:24,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:24,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:24,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:24,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:24,374 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) [2021-05-21 20:22:24,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:24,454 INFO L93 Difference]: Finished difference Result 3088 states and 11420 transitions. [2021-05-21 20:22:24,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:24,454 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 [2021-05-21 20:22:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:24,459 INFO L225 Difference]: With dead ends: 3088 [2021-05-21 20:22:24,459 INFO L226 Difference]: Without dead ends: 2863 [2021-05-21 20:22:24,459 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:24,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2021-05-21 20:22:24,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1474. [2021-05-21 20:22:24,513 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) [2021-05-21 20:22:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5877 transitions. [2021-05-21 20:22:24,518 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5877 transitions. Word has length 25 [2021-05-21 20:22:24,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:24,518 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5877 transitions. [2021-05-21 20:22:24,518 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) [2021-05-21 20:22:24,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5877 transitions. [2021-05-21 20:22:24,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:24,521 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:24,521 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:24,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-21 20:22:24,522 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]=== [2021-05-21 20:22:24,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:24,522 INFO L82 PathProgramCache]: Analyzing trace with hash -594697665, now seen corresponding path program 19 times [2021-05-21 20:22:24,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:24,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345067141] [2021-05-21 20:22:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:24,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:24,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345067141] [2021-05-21 20:22:24,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345067141] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:24,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:24,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:24,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065929471] [2021-05-21 20:22:24,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:24,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:24,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:24,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:24,631 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) [2021-05-21 20:22:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:24,723 INFO L93 Difference]: Finished difference Result 3261 states and 12104 transitions. [2021-05-21 20:22:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:24,723 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 [2021-05-21 20:22:24,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:24,731 INFO L225 Difference]: With dead ends: 3261 [2021-05-21 20:22:24,731 INFO L226 Difference]: Without dead ends: 3072 [2021-05-21 20:22:24,731 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-05-21 20:22:24,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 1543. [2021-05-21 20:22:24,791 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) [2021-05-21 20:22:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 6123 transitions. [2021-05-21 20:22:24,796 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 6123 transitions. Word has length 25 [2021-05-21 20:22:24,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:24,796 INFO L482 AbstractCegarLoop]: Abstraction has 1543 states and 6123 transitions. [2021-05-21 20:22:24,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 6123 transitions. [2021-05-21 20:22:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:24,800 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:24,800 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] [2021-05-21 20:22:24,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-21 20:22:24,800 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]=== [2021-05-21 20:22:24,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:24,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1656932637, now seen corresponding path program 20 times [2021-05-21 20:22:24,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:24,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129586372] [2021-05-21 20:22:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:24,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:24,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129586372] [2021-05-21 20:22:24,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129586372] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:24,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:24,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:24,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865402137] [2021-05-21 20:22:24,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:24,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:24,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:24,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:24,913 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) [2021-05-21 20:22:24,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:24,981 INFO L93 Difference]: Finished difference Result 3259 states and 12069 transitions. [2021-05-21 20:22:24,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:24,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:24,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:24,987 INFO L225 Difference]: With dead ends: 3259 [2021-05-21 20:22:24,987 INFO L226 Difference]: Without dead ends: 3042 [2021-05-21 20:22:24,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-05-21 20:22:25,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1513. [2021-05-21 20:22:25,044 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) [2021-05-21 20:22:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 6015 transitions. [2021-05-21 20:22:25,048 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 6015 transitions. Word has length 25 [2021-05-21 20:22:25,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:25,048 INFO L482 AbstractCegarLoop]: Abstraction has 1513 states and 6015 transitions. [2021-05-21 20:22:25,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 6015 transitions. [2021-05-21 20:22:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:25,052 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:25,052 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] [2021-05-21 20:22:25,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-21 20:22:25,052 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]=== [2021-05-21 20:22:25,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:25,052 INFO L82 PathProgramCache]: Analyzing trace with hash -659331171, now seen corresponding path program 21 times [2021-05-21 20:22:25,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:25,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178035167] [2021-05-21 20:22:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:25,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:25,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178035167] [2021-05-21 20:22:25,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178035167] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:25,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:25,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:25,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156993241] [2021-05-21 20:22:25,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:25,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:25,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:25,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:25,168 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) [2021-05-21 20:22:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:25,265 INFO L93 Difference]: Finished difference Result 3329 states and 12323 transitions. [2021-05-21 20:22:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:25,265 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 [2021-05-21 20:22:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:25,272 INFO L225 Difference]: With dead ends: 3329 [2021-05-21 20:22:25,273 INFO L226 Difference]: Without dead ends: 3140 [2021-05-21 20:22:25,273 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2021-05-21 20:22:25,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 1576. [2021-05-21 20:22:25,325 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) [2021-05-21 20:22:25,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 6222 transitions. [2021-05-21 20:22:25,329 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 6222 transitions. Word has length 25 [2021-05-21 20:22:25,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:25,329 INFO L482 AbstractCegarLoop]: Abstraction has 1576 states and 6222 transitions. [2021-05-21 20:22:25,329 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) [2021-05-21 20:22:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 6222 transitions. [2021-05-21 20:22:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:25,333 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:25,333 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] [2021-05-21 20:22:25,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-21 20:22:25,333 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]=== [2021-05-21 20:22:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:25,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1215119459, now seen corresponding path program 22 times [2021-05-21 20:22:25,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:25,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941230251] [2021-05-21 20:22:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:25,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:25,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941230251] [2021-05-21 20:22:25,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941230251] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:25,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:25,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:25,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245137868] [2021-05-21 20:22:25,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:25,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:25,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:25,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:25,450 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) [2021-05-21 20:22:25,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:25,518 INFO L93 Difference]: Finished difference Result 3362 states and 12406 transitions. [2021-05-21 20:22:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:25,518 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 [2021-05-21 20:22:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:25,526 INFO L225 Difference]: With dead ends: 3362 [2021-05-21 20:22:25,526 INFO L226 Difference]: Without dead ends: 3077 [2021-05-21 20:22:25,526 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 [2021-05-21 20:22:25,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2021-05-21 20:22:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1513. [2021-05-21 20:22:25,581 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) [2021-05-21 20:22:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 5984 transitions. [2021-05-21 20:22:25,585 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 5984 transitions. Word has length 25 [2021-05-21 20:22:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:25,586 INFO L482 AbstractCegarLoop]: Abstraction has 1513 states and 5984 transitions. [2021-05-21 20:22:25,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 5984 transitions. [2021-05-21 20:22:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:25,589 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:25,589 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] [2021-05-21 20:22:25,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-21 20:22:25,590 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]=== [2021-05-21 20:22:25,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:25,590 INFO L82 PathProgramCache]: Analyzing trace with hash 323016443, now seen corresponding path program 23 times [2021-05-21 20:22:25,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:25,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551648266] [2021-05-21 20:22:25,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:25,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:25,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551648266] [2021-05-21 20:22:25,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551648266] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:25,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:25,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:25,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067568196] [2021-05-21 20:22:25,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:25,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:25,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:25,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:25,707 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) [2021-05-21 20:22:25,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:25,785 INFO L93 Difference]: Finished difference Result 3308 states and 12231 transitions. [2021-05-21 20:22:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:25,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:25,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:25,793 INFO L225 Difference]: With dead ends: 3308 [2021-05-21 20:22:25,793 INFO L226 Difference]: Without dead ends: 3121 [2021-05-21 20:22:25,794 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2021-05-21 20:22:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1559. [2021-05-21 20:22:25,852 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) [2021-05-21 20:22:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 6141 transitions. [2021-05-21 20:22:25,856 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 6141 transitions. Word has length 25 [2021-05-21 20:22:25,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:25,856 INFO L482 AbstractCegarLoop]: Abstraction has 1559 states and 6141 transitions. [2021-05-21 20:22:25,856 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) [2021-05-21 20:22:25,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 6141 transitions. [2021-05-21 20:22:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:25,860 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:25,860 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] [2021-05-21 20:22:25,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-21 20:22:25,861 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]=== [2021-05-21 20:22:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash -2034373155, now seen corresponding path program 24 times [2021-05-21 20:22:25,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:25,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996650784] [2021-05-21 20:22:25,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:25,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:25,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996650784] [2021-05-21 20:22:25,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996650784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:25,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:25,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:25,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977978309] [2021-05-21 20:22:25,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:25,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:25,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:25,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:25,990 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) [2021-05-21 20:22:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:26,057 INFO L93 Difference]: Finished difference Result 3343 states and 12320 transitions. [2021-05-21 20:22:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:26,057 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 [2021-05-21 20:22:26,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:26,064 INFO L225 Difference]: With dead ends: 3343 [2021-05-21 20:22:26,064 INFO L226 Difference]: Without dead ends: 3020 [2021-05-21 20:22:26,066 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:26,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2021-05-21 20:22:26,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 1458. [2021-05-21 20:22:26,113 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) [2021-05-21 20:22:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5825 transitions. [2021-05-21 20:22:26,116 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5825 transitions. Word has length 25 [2021-05-21 20:22:26,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:26,116 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5825 transitions. [2021-05-21 20:22:26,116 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) [2021-05-21 20:22:26,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5825 transitions. [2021-05-21 20:22:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:26,119 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:26,119 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:26,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-21 20:22:26,120 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]=== [2021-05-21 20:22:26,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:26,120 INFO L82 PathProgramCache]: Analyzing trace with hash -891763715, now seen corresponding path program 25 times [2021-05-21 20:22:26,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:26,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614255090] [2021-05-21 20:22:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:26,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:26,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614255090] [2021-05-21 20:22:26,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614255090] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:26,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:26,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:26,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768139610] [2021-05-21 20:22:26,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:26,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:26,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:26,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:26,241 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) [2021-05-21 20:22:26,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:26,309 INFO L93 Difference]: Finished difference Result 3146 states and 11689 transitions. [2021-05-21 20:22:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:26,309 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 [2021-05-21 20:22:26,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:26,316 INFO L225 Difference]: With dead ends: 3146 [2021-05-21 20:22:26,316 INFO L226 Difference]: Without dead ends: 2987 [2021-05-21 20:22:26,317 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 [2021-05-21 20:22:26,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2021-05-21 20:22:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1526. [2021-05-21 20:22:26,374 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) [2021-05-21 20:22:26,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 6093 transitions. [2021-05-21 20:22:26,379 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 6093 transitions. Word has length 25 [2021-05-21 20:22:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:26,379 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 6093 transitions. [2021-05-21 20:22:26,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 6093 transitions. [2021-05-21 20:22:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:26,383 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:26,383 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:26,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-21 20:22:26,383 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]=== [2021-05-21 20:22:26,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:26,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1900061699, now seen corresponding path program 26 times [2021-05-21 20:22:26,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:26,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048310276] [2021-05-21 20:22:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:26,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:26,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048310276] [2021-05-21 20:22:26,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048310276] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:26,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:26,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:26,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995917599] [2021-05-21 20:22:26,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:26,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:26,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:26,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:26,531 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) [2021-05-21 20:22:26,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:26,607 INFO L93 Difference]: Finished difference Result 3209 states and 11896 transitions. [2021-05-21 20:22:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:26,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:26,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:26,613 INFO L225 Difference]: With dead ends: 3209 [2021-05-21 20:22:26,613 INFO L226 Difference]: Without dead ends: 2955 [2021-05-21 20:22:26,613 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 [2021-05-21 20:22:26,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-05-21 20:22:26,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1494. [2021-05-21 20:22:26,653 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) [2021-05-21 20:22:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5965 transitions. [2021-05-21 20:22:26,656 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5965 transitions. Word has length 25 [2021-05-21 20:22:26,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:26,656 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5965 transitions. [2021-05-21 20:22:26,656 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) [2021-05-21 20:22:26,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5965 transitions. [2021-05-21 20:22:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:26,658 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:26,658 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:26,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-21 20:22:26,659 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]=== [2021-05-21 20:22:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:26,659 INFO L82 PathProgramCache]: Analyzing trace with hash -853149031, now seen corresponding path program 27 times [2021-05-21 20:22:26,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:26,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340444802] [2021-05-21 20:22:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:26,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:26,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340444802] [2021-05-21 20:22:26,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340444802] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:26,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:26,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:26,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824431503] [2021-05-21 20:22:26,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:26,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:26,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:26,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:26,773 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) [2021-05-21 20:22:26,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:26,841 INFO L93 Difference]: Finished difference Result 3097 states and 11495 transitions. [2021-05-21 20:22:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:26,842 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 [2021-05-21 20:22:26,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:26,849 INFO L225 Difference]: With dead ends: 3097 [2021-05-21 20:22:26,849 INFO L226 Difference]: Without dead ends: 2938 [2021-05-21 20:22:26,850 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 [2021-05-21 20:22:26,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-05-21 20:22:26,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1510. [2021-05-21 20:22:26,906 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) [2021-05-21 20:22:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 6013 transitions. [2021-05-21 20:22:26,910 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 6013 transitions. Word has length 25 [2021-05-21 20:22:26,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:26,910 INFO L482 AbstractCegarLoop]: Abstraction has 1510 states and 6013 transitions. [2021-05-21 20:22:26,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 6013 transitions. [2021-05-21 20:22:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:26,914 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:26,914 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:26,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-21 20:22:26,914 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]=== [2021-05-21 20:22:26,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:26,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1851883515, now seen corresponding path program 28 times [2021-05-21 20:22:26,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:26,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886213470] [2021-05-21 20:22:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:27,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:27,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886213470] [2021-05-21 20:22:27,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886213470] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:27,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:27,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:27,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484454126] [2021-05-21 20:22:27,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:27,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:27,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:27,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:27,038 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) [2021-05-21 20:22:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:27,116 INFO L93 Difference]: Finished difference Result 3127 states and 11588 transitions. [2021-05-21 20:22:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:27,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:27,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:27,122 INFO L225 Difference]: With dead ends: 3127 [2021-05-21 20:22:27,122 INFO L226 Difference]: Without dead ends: 2922 [2021-05-21 20:22:27,122 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2021-05-21 20:22:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1494. [2021-05-21 20:22:27,164 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) [2021-05-21 20:22:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5957 transitions. [2021-05-21 20:22:27,167 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5957 transitions. Word has length 25 [2021-05-21 20:22:27,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:27,167 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5957 transitions. [2021-05-21 20:22:27,167 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) [2021-05-21 20:22:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5957 transitions. [2021-05-21 20:22:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:27,170 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:27,170 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] [2021-05-21 20:22:27,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-21 20:22:27,170 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]=== [2021-05-21 20:22:27,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:27,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1213720029, now seen corresponding path program 29 times [2021-05-21 20:22:27,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:27,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131880762] [2021-05-21 20:22:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:27,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:27,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131880762] [2021-05-21 20:22:27,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131880762] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:27,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:27,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:27,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684614137] [2021-05-21 20:22:27,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:27,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:27,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:27,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:27,288 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) [2021-05-21 20:22:27,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:27,398 INFO L93 Difference]: Finished difference Result 3237 states and 11993 transitions. [2021-05-21 20:22:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:27,398 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 [2021-05-21 20:22:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:27,404 INFO L225 Difference]: With dead ends: 3237 [2021-05-21 20:22:27,404 INFO L226 Difference]: Without dead ends: 3048 [2021-05-21 20:22:27,404 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 154.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2021-05-21 20:22:27,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 1557. [2021-05-21 20:22:27,444 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) [2021-05-21 20:22:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 6164 transitions. [2021-05-21 20:22:27,447 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 6164 transitions. Word has length 25 [2021-05-21 20:22:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:27,447 INFO L482 AbstractCegarLoop]: Abstraction has 1557 states and 6164 transitions. [2021-05-21 20:22:27,447 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) [2021-05-21 20:22:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 6164 transitions. [2021-05-21 20:22:27,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:27,450 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:27,450 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] [2021-05-21 20:22:27,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-21 20:22:27,450 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]=== [2021-05-21 20:22:27,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:27,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1511772987, now seen corresponding path program 30 times [2021-05-21 20:22:27,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:27,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967787538] [2021-05-21 20:22:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:27,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:27,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:27,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967787538] [2021-05-21 20:22:27,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967787538] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:27,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:27,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:27,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097599014] [2021-05-21 20:22:27,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:27,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:27,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:27,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:27,558 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) [2021-05-21 20:22:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:27,624 INFO L93 Difference]: Finished difference Result 3270 states and 12076 transitions. [2021-05-21 20:22:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:27,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:27,631 INFO L225 Difference]: With dead ends: 3270 [2021-05-21 20:22:27,631 INFO L226 Difference]: Without dead ends: 2961 [2021-05-21 20:22:27,631 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 [2021-05-21 20:22:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-05-21 20:22:27,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1470. [2021-05-21 20:22:27,685 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) [2021-05-21 20:22:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5869 transitions. [2021-05-21 20:22:27,689 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5869 transitions. Word has length 25 [2021-05-21 20:22:27,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:27,689 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5869 transitions. [2021-05-21 20:22:27,689 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) [2021-05-21 20:22:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5869 transitions. [2021-05-21 20:22:27,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:27,695 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:27,695 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:27,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-21 20:22:27,695 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]=== [2021-05-21 20:22:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:27,695 INFO L82 PathProgramCache]: Analyzing trace with hash 407415963, now seen corresponding path program 31 times [2021-05-21 20:22:27,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:27,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429785627] [2021-05-21 20:22:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:27,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:27,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429785627] [2021-05-21 20:22:27,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429785627] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:27,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:27,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:27,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350840324] [2021-05-21 20:22:27,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:27,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:27,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:27,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:27,815 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) [2021-05-21 20:22:27,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:27,870 INFO L93 Difference]: Finished difference Result 3113 states and 11574 transitions. [2021-05-21 20:22:27,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:27,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:27,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:27,876 INFO L225 Difference]: With dead ends: 3113 [2021-05-21 20:22:27,876 INFO L226 Difference]: Without dead ends: 2954 [2021-05-21 20:22:27,876 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 [2021-05-21 20:22:27,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2021-05-21 20:22:27,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1518. [2021-05-21 20:22:27,915 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) [2021-05-21 20:22:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 6053 transitions. [2021-05-21 20:22:27,917 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 6053 transitions. Word has length 25 [2021-05-21 20:22:27,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:27,917 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 6053 transitions. [2021-05-21 20:22:27,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:27,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 6053 transitions. [2021-05-21 20:22:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:27,920 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:27,920 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:27,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-21 20:22:27,920 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]=== [2021-05-21 20:22:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:27,920 INFO L82 PathProgramCache]: Analyzing trace with hash -600882021, now seen corresponding path program 32 times [2021-05-21 20:22:27,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:27,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913960561] [2021-05-21 20:22:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:28,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:28,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913960561] [2021-05-21 20:22:28,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913960561] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:28,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:28,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:28,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431297477] [2021-05-21 20:22:28,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:28,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:28,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:28,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:28,036 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) [2021-05-21 20:22:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:28,096 INFO L93 Difference]: Finished difference Result 3176 states and 11781 transitions. [2021-05-21 20:22:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:28,096 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 [2021-05-21 20:22:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:28,101 INFO L225 Difference]: With dead ends: 3176 [2021-05-21 20:22:28,101 INFO L226 Difference]: Without dead ends: 2922 [2021-05-21 20:22:28,102 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 [2021-05-21 20:22:28,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2021-05-21 20:22:28,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1486. [2021-05-21 20:22:28,139 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) [2021-05-21 20:22:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5925 transitions. [2021-05-21 20:22:28,144 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5925 transitions. Word has length 25 [2021-05-21 20:22:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:28,144 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5925 transitions. [2021-05-21 20:22:28,144 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) [2021-05-21 20:22:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5925 transitions. [2021-05-21 20:22:28,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:28,147 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:28,147 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] [2021-05-21 20:22:28,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-21 20:22:28,147 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]=== [2021-05-21 20:22:28,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:28,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1853761475, now seen corresponding path program 33 times [2021-05-21 20:22:28,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:28,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726120192] [2021-05-21 20:22:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:28,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:28,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726120192] [2021-05-21 20:22:28,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726120192] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:28,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:28,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:28,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595243125] [2021-05-21 20:22:28,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:28,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:28,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:28,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:28,252 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) [2021-05-21 20:22:28,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:28,318 INFO L93 Difference]: Finished difference Result 3058 states and 11363 transitions. [2021-05-21 20:22:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:28,319 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 [2021-05-21 20:22:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:28,324 INFO L225 Difference]: With dead ends: 3058 [2021-05-21 20:22:28,324 INFO L226 Difference]: Without dead ends: 2899 [2021-05-21 20:22:28,324 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 [2021-05-21 20:22:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2021-05-21 20:22:28,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1502. [2021-05-21 20:22:28,363 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) [2021-05-21 20:22:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5973 transitions. [2021-05-21 20:22:28,366 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5973 transitions. Word has length 25 [2021-05-21 20:22:28,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:28,366 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 5973 transitions. [2021-05-21 20:22:28,366 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) [2021-05-21 20:22:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5973 transitions. [2021-05-21 20:22:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:28,368 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:28,368 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] [2021-05-21 20:22:28,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-21 20:22:28,368 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]=== [2021-05-21 20:22:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:28,369 INFO L82 PathProgramCache]: Analyzing trace with hash -173264835, now seen corresponding path program 34 times [2021-05-21 20:22:28,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:28,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361314421] [2021-05-21 20:22:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:28,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:28,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361314421] [2021-05-21 20:22:28,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361314421] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:28,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:28,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:28,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889601570] [2021-05-21 20:22:28,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:28,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:28,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:28,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:28,484 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) [2021-05-21 20:22:28,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:28,567 INFO L93 Difference]: Finished difference Result 3082 states and 11439 transitions. [2021-05-21 20:22:28,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:28,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:28,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:28,573 INFO L225 Difference]: With dead ends: 3082 [2021-05-21 20:22:28,573 INFO L226 Difference]: Without dead ends: 2883 [2021-05-21 20:22:28,573 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 [2021-05-21 20:22:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2021-05-21 20:22:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1486. [2021-05-21 20:22:28,612 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) [2021-05-21 20:22:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5917 transitions. [2021-05-21 20:22:28,614 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5917 transitions. Word has length 25 [2021-05-21 20:22:28,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:28,615 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5917 transitions. [2021-05-21 20:22:28,615 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) [2021-05-21 20:22:28,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5917 transitions. [2021-05-21 20:22:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:28,617 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:28,617 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] [2021-05-21 20:22:28,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-21 20:22:28,617 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]=== [2021-05-21 20:22:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:28,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1514981437, now seen corresponding path program 35 times [2021-05-21 20:22:28,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:28,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813075301] [2021-05-21 20:22:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:28,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:28,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813075301] [2021-05-21 20:22:28,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813075301] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:28,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:28,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:28,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979975374] [2021-05-21 20:22:28,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:28,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:28,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:28,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:28,748 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) [2021-05-21 20:22:28,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:28,816 INFO L93 Difference]: Finished difference Result 3173 states and 11786 transitions. [2021-05-21 20:22:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:28,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:28,822 INFO L225 Difference]: With dead ends: 3173 [2021-05-21 20:22:28,822 INFO L226 Difference]: Without dead ends: 2990 [2021-05-21 20:22:28,822 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-05-21 20:22:28,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1530. [2021-05-21 20:22:28,862 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) [2021-05-21 20:22:28,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 6069 transitions. [2021-05-21 20:22:28,865 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 6069 transitions. Word has length 25 [2021-05-21 20:22:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:28,865 INFO L482 AbstractCegarLoop]: Abstraction has 1530 states and 6069 transitions. [2021-05-21 20:22:28,865 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) [2021-05-21 20:22:28,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 6069 transitions. [2021-05-21 20:22:28,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:28,867 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:28,867 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] [2021-05-21 20:22:28,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-21 20:22:28,867 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]=== [2021-05-21 20:22:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:28,868 INFO L82 PathProgramCache]: Analyzing trace with hash 510649499, now seen corresponding path program 36 times [2021-05-21 20:22:28,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:28,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872400718] [2021-05-21 20:22:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:28,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:28,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872400718] [2021-05-21 20:22:28,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872400718] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:28,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:28,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:28,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329110967] [2021-05-21 20:22:28,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:28,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:28,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:28,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:28,985 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) [2021-05-21 20:22:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:29,062 INFO L93 Difference]: Finished difference Result 3212 states and 11889 transitions. [2021-05-21 20:22:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:29,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:29,069 INFO L225 Difference]: With dead ends: 3212 [2021-05-21 20:22:29,069 INFO L226 Difference]: Without dead ends: 2930 [2021-05-21 20:22:29,070 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 [2021-05-21 20:22:29,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-05-21 20:22:29,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1470. [2021-05-21 20:22:29,123 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) [2021-05-21 20:22:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5861 transitions. [2021-05-21 20:22:29,127 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5861 transitions. Word has length 25 [2021-05-21 20:22:29,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:29,127 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5861 transitions. [2021-05-21 20:22:29,127 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) [2021-05-21 20:22:29,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5861 transitions. [2021-05-21 20:22:29,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:29,130 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:29,130 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:29,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-21 20:22:29,130 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]=== [2021-05-21 20:22:29,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:29,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1102019447, now seen corresponding path program 37 times [2021-05-21 20:22:29,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:29,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161635848] [2021-05-21 20:22:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:29,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:29,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161635848] [2021-05-21 20:22:29,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161635848] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:29,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:29,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:29,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367248635] [2021-05-21 20:22:29,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:29,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:29,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:29,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:29,244 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) [2021-05-21 20:22:29,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:29,336 INFO L93 Difference]: Finished difference Result 2991 states and 11110 transitions. [2021-05-21 20:22:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:29,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:29,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:29,342 INFO L225 Difference]: With dead ends: 2991 [2021-05-21 20:22:29,342 INFO L226 Difference]: Without dead ends: 2832 [2021-05-21 20:22:29,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-05-21 20:22:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1494. [2021-05-21 20:22:29,379 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) [2021-05-21 20:22:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5945 transitions. [2021-05-21 20:22:29,382 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5945 transitions. Word has length 25 [2021-05-21 20:22:29,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:29,382 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5945 transitions. [2021-05-21 20:22:29,382 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) [2021-05-21 20:22:29,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5945 transitions. [2021-05-21 20:22:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:29,384 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:29,384 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] [2021-05-21 20:22:29,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-21 20:22:29,385 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]=== [2021-05-21 20:22:29,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:29,385 INFO L82 PathProgramCache]: Analyzing trace with hash -487915303, now seen corresponding path program 38 times [2021-05-21 20:22:29,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:29,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293285479] [2021-05-21 20:22:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:29,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:29,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293285479] [2021-05-21 20:22:29,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293285479] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:29,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:29,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:29,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104605031] [2021-05-21 20:22:29,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:29,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:29,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:29,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:29,496 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) [2021-05-21 20:22:29,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:29,575 INFO L93 Difference]: Finished difference Result 3021 states and 11203 transitions. [2021-05-21 20:22:29,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:29,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:29,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:29,581 INFO L225 Difference]: With dead ends: 3021 [2021-05-21 20:22:29,581 INFO L226 Difference]: Without dead ends: 2816 [2021-05-21 20:22:29,581 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:29,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-05-21 20:22:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1478. [2021-05-21 20:22:29,618 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) [2021-05-21 20:22:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5889 transitions. [2021-05-21 20:22:29,621 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5889 transitions. Word has length 25 [2021-05-21 20:22:29,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:29,621 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5889 transitions. [2021-05-21 20:22:29,621 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) [2021-05-21 20:22:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5889 transitions. [2021-05-21 20:22:29,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:29,624 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:29,624 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] [2021-05-21 20:22:29,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-21 20:22:29,624 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]=== [2021-05-21 20:22:29,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:29,625 INFO L82 PathProgramCache]: Analyzing trace with hash 895211481, now seen corresponding path program 39 times [2021-05-21 20:22:29,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:29,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834456194] [2021-05-21 20:22:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:29,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:29,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834456194] [2021-05-21 20:22:29,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834456194] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:29,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:29,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:29,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447159202] [2021-05-21 20:22:29,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:29,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:29,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:29,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:29,725 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) [2021-05-21 20:22:29,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:29,786 INFO L93 Difference]: Finished difference Result 2985 states and 11085 transitions. [2021-05-21 20:22:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:29,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:29,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:29,792 INFO L225 Difference]: With dead ends: 2985 [2021-05-21 20:22:29,792 INFO L226 Difference]: Without dead ends: 2826 [2021-05-21 20:22:29,792 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-05-21 20:22:29,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1494. [2021-05-21 20:22:29,829 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) [2021-05-21 20:22:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5937 transitions. [2021-05-21 20:22:29,831 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5937 transitions. Word has length 25 [2021-05-21 20:22:29,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:29,831 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5937 transitions. [2021-05-21 20:22:29,831 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) [2021-05-21 20:22:29,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5937 transitions. [2021-05-21 20:22:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:29,833 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:29,833 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] [2021-05-21 20:22:29,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-21 20:22:29,834 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]=== [2021-05-21 20:22:29,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:29,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1719259175, now seen corresponding path program 40 times [2021-05-21 20:22:29,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:29,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091661045] [2021-05-21 20:22:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:29,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:29,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091661045] [2021-05-21 20:22:29,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091661045] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:29,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:29,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:29,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710362601] [2021-05-21 20:22:29,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:29,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:29,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:29,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:29,936 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) [2021-05-21 20:22:30,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:30,012 INFO L93 Difference]: Finished difference Result 3009 states and 11161 transitions. [2021-05-21 20:22:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:30,012 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 [2021-05-21 20:22:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:30,019 INFO L225 Difference]: With dead ends: 3009 [2021-05-21 20:22:30,019 INFO L226 Difference]: Without dead ends: 2810 [2021-05-21 20:22:30,019 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 [2021-05-21 20:22:30,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-05-21 20:22:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1478. [2021-05-21 20:22:30,070 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) [2021-05-21 20:22:30,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5881 transitions. [2021-05-21 20:22:30,073 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5881 transitions. Word has length 25 [2021-05-21 20:22:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:30,073 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5881 transitions. [2021-05-21 20:22:30,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5881 transitions. [2021-05-21 20:22:30,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:30,075 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:30,075 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] [2021-05-21 20:22:30,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-21 20:22:30,076 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]=== [2021-05-21 20:22:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:30,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1982593861, now seen corresponding path program 41 times [2021-05-21 20:22:30,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:30,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382820461] [2021-05-21 20:22:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:30,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:30,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382820461] [2021-05-21 20:22:30,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382820461] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:30,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:30,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:30,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234490465] [2021-05-21 20:22:30,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:30,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:30,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:30,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:30,171 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) [2021-05-21 20:22:30,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:30,246 INFO L93 Difference]: Finished difference Result 3057 states and 11347 transitions. [2021-05-21 20:22:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:30,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:30,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:30,252 INFO L225 Difference]: With dead ends: 3057 [2021-05-21 20:22:30,252 INFO L226 Difference]: Without dead ends: 2868 [2021-05-21 20:22:30,252 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 [2021-05-21 20:22:30,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2021-05-21 20:22:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1506. [2021-05-21 20:22:30,294 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) [2021-05-21 20:22:30,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5969 transitions. [2021-05-21 20:22:30,297 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5969 transitions. Word has length 25 [2021-05-21 20:22:30,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:30,297 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5969 transitions. [2021-05-21 20:22:30,297 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) [2021-05-21 20:22:30,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5969 transitions. [2021-05-21 20:22:30,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:30,299 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:30,299 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] [2021-05-21 20:22:30,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-21 20:22:30,299 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]=== [2021-05-21 20:22:30,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:30,300 INFO L82 PathProgramCache]: Analyzing trace with hash 920228889, now seen corresponding path program 42 times [2021-05-21 20:22:30,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:30,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096557586] [2021-05-21 20:22:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:30,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:30,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096557586] [2021-05-21 20:22:30,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096557586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:30,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:30,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:30,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806205194] [2021-05-21 20:22:30,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:30,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:30,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:30,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:30,418 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) [2021-05-21 20:22:30,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:30,496 INFO L93 Difference]: Finished difference Result 3051 states and 11302 transitions. [2021-05-21 20:22:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:30,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:30,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:30,501 INFO L225 Difference]: With dead ends: 3051 [2021-05-21 20:22:30,501 INFO L226 Difference]: Without dead ends: 2832 [2021-05-21 20:22:30,502 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 [2021-05-21 20:22:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-05-21 20:22:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1470. [2021-05-21 20:22:30,539 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) [2021-05-21 20:22:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5857 transitions. [2021-05-21 20:22:30,541 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5857 transitions. Word has length 25 [2021-05-21 20:22:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:30,541 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5857 transitions. [2021-05-21 20:22:30,542 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) [2021-05-21 20:22:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5857 transitions. [2021-05-21 20:22:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:30,544 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:30,544 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] [2021-05-21 20:22:30,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-21 20:22:30,544 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]=== [2021-05-21 20:22:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:30,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1077380579, now seen corresponding path program 43 times [2021-05-21 20:22:30,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:30,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911975585] [2021-05-21 20:22:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:30,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:30,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911975585] [2021-05-21 20:22:30,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911975585] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:30,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:30,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:30,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808470686] [2021-05-21 20:22:30,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:30,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:30,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:30,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:30,642 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) [2021-05-21 20:22:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:30,719 INFO L93 Difference]: Finished difference Result 3217 states and 11965 transitions. [2021-05-21 20:22:30,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:30,719 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 [2021-05-21 20:22:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:30,726 INFO L225 Difference]: With dead ends: 3217 [2021-05-21 20:22:30,727 INFO L226 Difference]: Without dead ends: 3028 [2021-05-21 20:22:30,727 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 [2021-05-21 20:22:30,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2021-05-21 20:22:30,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 1528. [2021-05-21 20:22:30,781 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) [2021-05-21 20:22:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 6074 transitions. [2021-05-21 20:22:30,785 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 6074 transitions. Word has length 25 [2021-05-21 20:22:30,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:30,786 INFO L482 AbstractCegarLoop]: Abstraction has 1528 states and 6074 transitions. [2021-05-21 20:22:30,786 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) [2021-05-21 20:22:30,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 6074 transitions. [2021-05-21 20:22:30,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:30,788 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:30,789 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:30,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-21 20:22:30,789 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]=== [2021-05-21 20:22:30,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:30,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1825442171, now seen corresponding path program 44 times [2021-05-21 20:22:30,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:30,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851678346] [2021-05-21 20:22:30,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:30,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:30,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851678346] [2021-05-21 20:22:30,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851678346] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:30,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:30,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:30,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988371705] [2021-05-21 20:22:30,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:30,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:30,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:30,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:30,890 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) [2021-05-21 20:22:30,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:30,974 INFO L93 Difference]: Finished difference Result 3211 states and 11920 transitions. [2021-05-21 20:22:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:30,974 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 [2021-05-21 20:22:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:30,981 INFO L225 Difference]: With dead ends: 3211 [2021-05-21 20:22:30,981 INFO L226 Difference]: Without dead ends: 3000 [2021-05-21 20:22:30,982 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 [2021-05-21 20:22:31,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2021-05-21 20:22:31,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1500. [2021-05-21 20:22:31,035 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) [2021-05-21 20:22:31,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5972 transitions. [2021-05-21 20:22:31,039 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5972 transitions. Word has length 25 [2021-05-21 20:22:31,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:31,040 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5972 transitions. [2021-05-21 20:22:31,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:31,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5972 transitions. [2021-05-21 20:22:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:31,043 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:31,043 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:31,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-21 20:22:31,043 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]=== [2021-05-21 20:22:31,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:31,044 INFO L82 PathProgramCache]: Analyzing trace with hash 127268603, now seen corresponding path program 45 times [2021-05-21 20:22:31,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:31,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406127446] [2021-05-21 20:22:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:31,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:31,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406127446] [2021-05-21 20:22:31,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406127446] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:31,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:31,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:31,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780421810] [2021-05-21 20:22:31,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:31,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:31,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:31,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:31,148 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) [2021-05-21 20:22:31,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:31,224 INFO L93 Difference]: Finished difference Result 3291 states and 12204 transitions. [2021-05-21 20:22:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:31,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:31,232 INFO L225 Difference]: With dead ends: 3291 [2021-05-21 20:22:31,232 INFO L226 Difference]: Without dead ends: 3102 [2021-05-21 20:22:31,232 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:31,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2021-05-21 20:22:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 1563. [2021-05-21 20:22:31,307 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) [2021-05-21 20:22:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 6179 transitions. [2021-05-21 20:22:31,312 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 6179 transitions. Word has length 25 [2021-05-21 20:22:31,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:31,312 INFO L482 AbstractCegarLoop]: Abstraction has 1563 states and 6179 transitions. [2021-05-21 20:22:31,312 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) [2021-05-21 20:22:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 6179 transitions. [2021-05-21 20:22:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:31,317 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:31,317 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:31,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-21 20:22:31,318 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]=== [2021-05-21 20:22:31,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:31,318 INFO L82 PathProgramCache]: Analyzing trace with hash 859350907, now seen corresponding path program 46 times [2021-05-21 20:22:31,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:31,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489898116] [2021-05-21 20:22:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:31,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:31,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489898116] [2021-05-21 20:22:31,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489898116] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:31,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:31,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:31,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978602681] [2021-05-21 20:22:31,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:31,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:31,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:31,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:31,432 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) [2021-05-21 20:22:31,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:31,505 INFO L93 Difference]: Finished difference Result 3324 states and 12287 transitions. [2021-05-21 20:22:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:31,506 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 [2021-05-21 20:22:31,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:31,514 INFO L225 Difference]: With dead ends: 3324 [2021-05-21 20:22:31,514 INFO L226 Difference]: Without dead ends: 3039 [2021-05-21 20:22:31,515 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 [2021-05-21 20:22:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2021-05-21 20:22:31,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 1500. [2021-05-21 20:22:31,577 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) [2021-05-21 20:22:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5942 transitions. [2021-05-21 20:22:31,582 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5942 transitions. Word has length 25 [2021-05-21 20:22:31,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:31,582 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5942 transitions. [2021-05-21 20:22:31,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:31,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5942 transitions. [2021-05-21 20:22:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:31,586 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:31,586 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] [2021-05-21 20:22:31,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-21 20:22:31,586 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]=== [2021-05-21 20:22:31,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:31,586 INFO L82 PathProgramCache]: Analyzing trace with hash 491525977, now seen corresponding path program 47 times [2021-05-21 20:22:31,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:31,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195362283] [2021-05-21 20:22:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:31,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:31,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195362283] [2021-05-21 20:22:31,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195362283] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:31,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:31,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:31,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009112976] [2021-05-21 20:22:31,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:31,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:31,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:31,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:31,709 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) [2021-05-21 20:22:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:31,794 INFO L93 Difference]: Finished difference Result 3260 states and 12082 transitions. [2021-05-21 20:22:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:31,795 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 [2021-05-21 20:22:31,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:31,803 INFO L225 Difference]: With dead ends: 3260 [2021-05-21 20:22:31,803 INFO L226 Difference]: Without dead ends: 3077 [2021-05-21 20:22:31,803 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 [2021-05-21 20:22:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2021-05-21 20:22:31,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1544. [2021-05-21 20:22:31,853 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) [2021-05-21 20:22:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 6094 transitions. [2021-05-21 20:22:31,857 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 6094 transitions. Word has length 25 [2021-05-21 20:22:31,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:31,857 INFO L482 AbstractCegarLoop]: Abstraction has 1544 states and 6094 transitions. [2021-05-21 20:22:31,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 6094 transitions. [2021-05-21 20:22:31,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:31,859 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:31,859 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:31,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-21 20:22:31,860 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]=== [2021-05-21 20:22:31,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:31,860 INFO L82 PathProgramCache]: Analyzing trace with hash -577993029, now seen corresponding path program 48 times [2021-05-21 20:22:31,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:31,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356267661] [2021-05-21 20:22:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:31,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:31,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356267661] [2021-05-21 20:22:31,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356267661] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:31,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:31,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:31,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448230553] [2021-05-21 20:22:31,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:31,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:31,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:31,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:31,984 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) [2021-05-21 20:22:32,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:32,045 INFO L93 Difference]: Finished difference Result 3299 states and 12185 transitions. [2021-05-21 20:22:32,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:32,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:32,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:32,051 INFO L225 Difference]: With dead ends: 3299 [2021-05-21 20:22:32,051 INFO L226 Difference]: Without dead ends: 2991 [2021-05-21 20:22:32,052 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:32,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2021-05-21 20:22:32,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1458. [2021-05-21 20:22:32,090 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) [2021-05-21 20:22:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5819 transitions. [2021-05-21 20:22:32,093 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5819 transitions. Word has length 25 [2021-05-21 20:22:32,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:32,093 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5819 transitions. [2021-05-21 20:22:32,093 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) [2021-05-21 20:22:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5819 transitions. [2021-05-21 20:22:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:32,095 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:32,095 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] [2021-05-21 20:22:32,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-21 20:22:32,095 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]=== [2021-05-21 20:22:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:32,095 INFO L82 PathProgramCache]: Analyzing trace with hash 483139259, now seen corresponding path program 49 times [2021-05-21 20:22:32,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:32,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446338015] [2021-05-21 20:22:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:32,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:32,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446338015] [2021-05-21 20:22:32,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446338015] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:32,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:32,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:32,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588039304] [2021-05-21 20:22:32,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:32,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:32,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:32,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:32,216 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) [2021-05-21 20:22:32,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:32,270 INFO L93 Difference]: Finished difference Result 3080 states and 11471 transitions. [2021-05-21 20:22:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:32,270 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 [2021-05-21 20:22:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:32,275 INFO L225 Difference]: With dead ends: 3080 [2021-05-21 20:22:32,276 INFO L226 Difference]: Without dead ends: 2921 [2021-05-21 20:22:32,276 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 [2021-05-21 20:22:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-05-21 20:22:32,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1514. [2021-05-21 20:22:32,313 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) [2021-05-21 20:22:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6043 transitions. [2021-05-21 20:22:32,316 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6043 transitions. Word has length 25 [2021-05-21 20:22:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:32,316 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 6043 transitions. [2021-05-21 20:22:32,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:32,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6043 transitions. [2021-05-21 20:22:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:32,318 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:32,318 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:32,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-21 20:22:32,319 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]=== [2021-05-21 20:22:32,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:32,319 INFO L82 PathProgramCache]: Analyzing trace with hash -525158725, now seen corresponding path program 50 times [2021-05-21 20:22:32,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:32,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306856598] [2021-05-21 20:22:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:32,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:32,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306856598] [2021-05-21 20:22:32,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306856598] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:32,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:32,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:32,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388924921] [2021-05-21 20:22:32,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:32,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:32,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:32,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:32,431 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) [2021-05-21 20:22:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:32,497 INFO L93 Difference]: Finished difference Result 3143 states and 11678 transitions. [2021-05-21 20:22:32,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:32,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:32,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:32,502 INFO L225 Difference]: With dead ends: 3143 [2021-05-21 20:22:32,502 INFO L226 Difference]: Without dead ends: 2889 [2021-05-21 20:22:32,503 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 [2021-05-21 20:22:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2021-05-21 20:22:32,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1482. [2021-05-21 20:22:32,541 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) [2021-05-21 20:22:32,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5915 transitions. [2021-05-21 20:22:32,543 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5915 transitions. Word has length 25 [2021-05-21 20:22:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:32,544 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5915 transitions. [2021-05-21 20:22:32,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5915 transitions. [2021-05-21 20:22:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:32,546 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:32,546 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] [2021-05-21 20:22:32,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-21 20:22:32,546 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]=== [2021-05-21 20:22:32,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:32,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1472172765, now seen corresponding path program 51 times [2021-05-21 20:22:32,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:32,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748460027] [2021-05-21 20:22:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:32,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:32,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748460027] [2021-05-21 20:22:32,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748460027] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:32,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:32,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:32,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735407827] [2021-05-21 20:22:32,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:32,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:32,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:32,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:32,663 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) [2021-05-21 20:22:32,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:32,726 INFO L93 Difference]: Finished difference Result 3029 states and 11272 transitions. [2021-05-21 20:22:32,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:32,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:32,731 INFO L225 Difference]: With dead ends: 3029 [2021-05-21 20:22:32,731 INFO L226 Difference]: Without dead ends: 2870 [2021-05-21 20:22:32,731 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-05-21 20:22:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1498. [2021-05-21 20:22:32,768 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) [2021-05-21 20:22:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5963 transitions. [2021-05-21 20:22:32,771 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5963 transitions. Word has length 25 [2021-05-21 20:22:32,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:32,771 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5963 transitions. [2021-05-21 20:22:32,771 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) [2021-05-21 20:22:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5963 transitions. [2021-05-21 20:22:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:32,773 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:32,773 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] [2021-05-21 20:22:32,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-21 20:22:32,773 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]=== [2021-05-21 20:22:32,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:32,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1814496547, now seen corresponding path program 52 times [2021-05-21 20:22:32,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:32,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153423025] [2021-05-21 20:22:32,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:32,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:32,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153423025] [2021-05-21 20:22:32,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153423025] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:32,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:32,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:32,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526923618] [2021-05-21 20:22:32,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:32,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:32,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:32,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:32,887 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) [2021-05-21 20:22:32,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:32,973 INFO L93 Difference]: Finished difference Result 3057 states and 11360 transitions. [2021-05-21 20:22:32,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:32,974 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 [2021-05-21 20:22:32,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:32,980 INFO L225 Difference]: With dead ends: 3057 [2021-05-21 20:22:32,980 INFO L226 Difference]: Without dead ends: 2854 [2021-05-21 20:22:32,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:33,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-05-21 20:22:33,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1482. [2021-05-21 20:22:33,033 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) [2021-05-21 20:22:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5907 transitions. [2021-05-21 20:22:33,037 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5907 transitions. Word has length 25 [2021-05-21 20:22:33,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:33,037 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5907 transitions. [2021-05-21 20:22:33,037 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) [2021-05-21 20:22:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5907 transitions. [2021-05-21 20:22:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:33,040 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:33,040 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] [2021-05-21 20:22:33,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-21 20:22:33,040 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]=== [2021-05-21 20:22:33,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:33,041 INFO L82 PathProgramCache]: Analyzing trace with hash -126250275, now seen corresponding path program 53 times [2021-05-21 20:22:33,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:33,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016746065] [2021-05-21 20:22:33,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:33,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:33,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016746065] [2021-05-21 20:22:33,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016746065] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:33,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:33,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:33,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100521581] [2021-05-21 20:22:33,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:33,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:33,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:33,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:33,157 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) [2021-05-21 20:22:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:33,245 INFO L93 Difference]: Finished difference Result 3150 states and 11714 transitions. [2021-05-21 20:22:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:33,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:33,253 INFO L225 Difference]: With dead ends: 3150 [2021-05-21 20:22:33,253 INFO L226 Difference]: Without dead ends: 2963 [2021-05-21 20:22:33,253 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:33,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2021-05-21 20:22:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1528. [2021-05-21 20:22:33,310 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) [2021-05-21 20:22:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 6064 transitions. [2021-05-21 20:22:33,314 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 6064 transitions. Word has length 25 [2021-05-21 20:22:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:33,314 INFO L482 AbstractCegarLoop]: Abstraction has 1528 states and 6064 transitions. [2021-05-21 20:22:33,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 6064 transitions. [2021-05-21 20:22:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:33,317 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:33,318 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:33,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-21 20:22:33,318 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]=== [2021-05-21 20:22:33,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:33,318 INFO L82 PathProgramCache]: Analyzing trace with hash -479389765, now seen corresponding path program 54 times [2021-05-21 20:22:33,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:33,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515807871] [2021-05-21 20:22:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:33,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:33,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515807871] [2021-05-21 20:22:33,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515807871] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:33,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:33,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:33,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430122555] [2021-05-21 20:22:33,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:33,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:33,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:33,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:33,430 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) [2021-05-21 20:22:33,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:33,503 INFO L93 Difference]: Finished difference Result 3185 states and 11803 transitions. [2021-05-21 20:22:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:33,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:33,510 INFO L225 Difference]: With dead ends: 3185 [2021-05-21 20:22:33,511 INFO L226 Difference]: Without dead ends: 2901 [2021-05-21 20:22:33,511 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 [2021-05-21 20:22:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2021-05-21 20:22:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1466. [2021-05-21 20:22:33,555 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) [2021-05-21 20:22:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5851 transitions. [2021-05-21 20:22:33,557 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5851 transitions. Word has length 25 [2021-05-21 20:22:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:33,557 INFO L482 AbstractCegarLoop]: Abstraction has 1466 states and 5851 transitions. [2021-05-21 20:22:33,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:33,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5851 transitions. [2021-05-21 20:22:33,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:33,559 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:33,560 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:33,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-21 20:22:33,560 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]=== [2021-05-21 20:22:33,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:33,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2102226275, now seen corresponding path program 55 times [2021-05-21 20:22:33,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:33,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477932668] [2021-05-21 20:22:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:33,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:33,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477932668] [2021-05-21 20:22:33,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477932668] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:33,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:33,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:33,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395340959] [2021-05-21 20:22:33,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:33,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:33,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:33,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:33,676 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) [2021-05-21 20:22:33,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:33,757 INFO L93 Difference]: Finished difference Result 3074 states and 11444 transitions. [2021-05-21 20:22:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:33,758 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 [2021-05-21 20:22:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:33,764 INFO L225 Difference]: With dead ends: 3074 [2021-05-21 20:22:33,764 INFO L226 Difference]: Without dead ends: 2915 [2021-05-21 20:22:33,764 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 [2021-05-21 20:22:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2021-05-21 20:22:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1514. [2021-05-21 20:22:33,802 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) [2021-05-21 20:22:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6035 transitions. [2021-05-21 20:22:33,805 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6035 transitions. Word has length 25 [2021-05-21 20:22:33,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:33,805 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 6035 transitions. [2021-05-21 20:22:33,805 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) [2021-05-21 20:22:33,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6035 transitions. [2021-05-21 20:22:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:33,807 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:33,807 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:33,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-21 20:22:33,808 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]=== [2021-05-21 20:22:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:33,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1184443037, now seen corresponding path program 56 times [2021-05-21 20:22:33,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:33,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492562757] [2021-05-21 20:22:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:33,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:33,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492562757] [2021-05-21 20:22:33,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492562757] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:33,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:33,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:33,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75874762] [2021-05-21 20:22:33,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:33,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:33,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:33,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:33,922 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) [2021-05-21 20:22:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:33,990 INFO L93 Difference]: Finished difference Result 3137 states and 11651 transitions. [2021-05-21 20:22:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:33,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:33,996 INFO L225 Difference]: With dead ends: 3137 [2021-05-21 20:22:33,996 INFO L226 Difference]: Without dead ends: 2883 [2021-05-21 20:22:33,996 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2021-05-21 20:22:34,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1482. [2021-05-21 20:22:34,034 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) [2021-05-21 20:22:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5907 transitions. [2021-05-21 20:22:34,036 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5907 transitions. Word has length 25 [2021-05-21 20:22:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:34,037 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5907 transitions. [2021-05-21 20:22:34,037 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) [2021-05-21 20:22:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5907 transitions. [2021-05-21 20:22:34,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:34,039 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:34,039 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:34,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-21 20:22:34,039 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]=== [2021-05-21 20:22:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:34,039 INFO L82 PathProgramCache]: Analyzing trace with hash -2096473507, now seen corresponding path program 57 times [2021-05-21 20:22:34,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:34,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467234577] [2021-05-21 20:22:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:34,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:34,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467234577] [2021-05-21 20:22:34,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467234577] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:34,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:34,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:34,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591910240] [2021-05-21 20:22:34,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:34,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:34,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:34,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:34,142 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) [2021-05-21 20:22:34,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:34,219 INFO L93 Difference]: Finished difference Result 3019 states and 11233 transitions. [2021-05-21 20:22:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:34,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:34,226 INFO L225 Difference]: With dead ends: 3019 [2021-05-21 20:22:34,227 INFO L226 Difference]: Without dead ends: 2860 [2021-05-21 20:22:34,227 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-05-21 20:22:34,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1498. [2021-05-21 20:22:34,279 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) [2021-05-21 20:22:34,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5955 transitions. [2021-05-21 20:22:34,283 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5955 transitions. Word has length 25 [2021-05-21 20:22:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:34,283 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5955 transitions. [2021-05-21 20:22:34,283 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) [2021-05-21 20:22:34,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5955 transitions. [2021-05-21 20:22:34,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:34,286 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:34,286 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] [2021-05-21 20:22:34,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-21 20:22:34,287 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]=== [2021-05-21 20:22:34,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:34,287 INFO L82 PathProgramCache]: Analyzing trace with hash -415976867, now seen corresponding path program 58 times [2021-05-21 20:22:34,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:34,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397203423] [2021-05-21 20:22:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:34,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:34,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397203423] [2021-05-21 20:22:34,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397203423] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:34,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:34,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:34,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694547641] [2021-05-21 20:22:34,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:34,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:34,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:34,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:34,393 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) [2021-05-21 20:22:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:34,478 INFO L93 Difference]: Finished difference Result 3043 states and 11309 transitions. [2021-05-21 20:22:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:34,478 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 [2021-05-21 20:22:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:34,486 INFO L225 Difference]: With dead ends: 3043 [2021-05-21 20:22:34,486 INFO L226 Difference]: Without dead ends: 2844 [2021-05-21 20:22:34,486 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2021-05-21 20:22:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 1482. [2021-05-21 20:22:34,540 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) [2021-05-21 20:22:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5899 transitions. [2021-05-21 20:22:34,545 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5899 transitions. Word has length 25 [2021-05-21 20:22:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:34,545 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5899 transitions. [2021-05-21 20:22:34,545 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) [2021-05-21 20:22:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5899 transitions. [2021-05-21 20:22:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:34,548 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:34,548 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] [2021-05-21 20:22:34,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-21 20:22:34,549 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]=== [2021-05-21 20:22:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:34,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1272269405, now seen corresponding path program 59 times [2021-05-21 20:22:34,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:34,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56183026] [2021-05-21 20:22:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:34,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:34,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56183026] [2021-05-21 20:22:34,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56183026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:34,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:34,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:34,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136045046] [2021-05-21 20:22:34,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:34,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:34,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:34,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:34,675 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) [2021-05-21 20:22:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:34,755 INFO L93 Difference]: Finished difference Result 3134 states and 11656 transitions. [2021-05-21 20:22:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:34,755 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 [2021-05-21 20:22:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:34,762 INFO L225 Difference]: With dead ends: 3134 [2021-05-21 20:22:34,762 INFO L226 Difference]: Without dead ends: 2951 [2021-05-21 20:22:34,763 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 [2021-05-21 20:22:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-05-21 20:22:34,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1526. [2021-05-21 20:22:34,819 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) [2021-05-21 20:22:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 6051 transitions. [2021-05-21 20:22:34,824 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 6051 transitions. Word has length 25 [2021-05-21 20:22:34,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:34,825 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 6051 transitions. [2021-05-21 20:22:34,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:34,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 6051 transitions. [2021-05-21 20:22:34,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:34,829 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:34,829 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] [2021-05-21 20:22:34,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-21 20:22:34,829 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]=== [2021-05-21 20:22:34,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:34,830 INFO L82 PathProgramCache]: Analyzing trace with hash 267937467, now seen corresponding path program 60 times [2021-05-21 20:22:34,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:34,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736225156] [2021-05-21 20:22:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:34,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:34,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736225156] [2021-05-21 20:22:34,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736225156] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:34,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:34,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:34,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224305649] [2021-05-21 20:22:34,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:34,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:34,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:34,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:34,948 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) [2021-05-21 20:22:35,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:35,013 INFO L93 Difference]: Finished difference Result 3173 states and 11759 transitions. [2021-05-21 20:22:35,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:35,014 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 [2021-05-21 20:22:35,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:35,021 INFO L225 Difference]: With dead ends: 3173 [2021-05-21 20:22:35,021 INFO L226 Difference]: Without dead ends: 2891 [2021-05-21 20:22:35,021 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 [2021-05-21 20:22:35,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2021-05-21 20:22:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1466. [2021-05-21 20:22:35,067 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) [2021-05-21 20:22:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5843 transitions. [2021-05-21 20:22:35,071 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5843 transitions. Word has length 25 [2021-05-21 20:22:35,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:35,071 INFO L482 AbstractCegarLoop]: Abstraction has 1466 states and 5843 transitions. [2021-05-21 20:22:35,072 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) [2021-05-21 20:22:35,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5843 transitions. [2021-05-21 20:22:35,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:35,074 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:35,074 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] [2021-05-21 20:22:35,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-21 20:22:35,075 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]=== [2021-05-21 20:22:35,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:35,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1734106623, now seen corresponding path program 61 times [2021-05-21 20:22:35,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:35,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219015231] [2021-05-21 20:22:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:35,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:35,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219015231] [2021-05-21 20:22:35,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219015231] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:35,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:35,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:35,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235432362] [2021-05-21 20:22:35,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:35,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:35,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:35,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:35,183 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) [2021-05-21 20:22:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:35,253 INFO L93 Difference]: Finished difference Result 2948 states and 10970 transitions. [2021-05-21 20:22:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:35,253 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 [2021-05-21 20:22:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:35,260 INFO L225 Difference]: With dead ends: 2948 [2021-05-21 20:22:35,260 INFO L226 Difference]: Without dead ends: 2789 [2021-05-21 20:22:35,260 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 [2021-05-21 20:22:35,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-05-21 20:22:35,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 1490. [2021-05-21 20:22:35,313 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) [2021-05-21 20:22:35,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5927 transitions. [2021-05-21 20:22:35,317 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5927 transitions. Word has length 25 [2021-05-21 20:22:35,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:35,317 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5927 transitions. [2021-05-21 20:22:35,317 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) [2021-05-21 20:22:35,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5927 transitions. [2021-05-21 20:22:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:35,320 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:35,320 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] [2021-05-21 20:22:35,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-21 20:22:35,320 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]=== [2021-05-21 20:22:35,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:35,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1552562689, now seen corresponding path program 62 times [2021-05-21 20:22:35,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:35,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798813683] [2021-05-21 20:22:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:35,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:35,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798813683] [2021-05-21 20:22:35,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798813683] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:35,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:35,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:35,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447014757] [2021-05-21 20:22:35,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:35,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:35,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:35,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:35,430 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) [2021-05-21 20:22:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:35,516 INFO L93 Difference]: Finished difference Result 2976 states and 11058 transitions. [2021-05-21 20:22:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:35,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:35,523 INFO L225 Difference]: With dead ends: 2976 [2021-05-21 20:22:35,523 INFO L226 Difference]: Without dead ends: 2773 [2021-05-21 20:22:35,523 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2021-05-21 20:22:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 1474. [2021-05-21 20:22:35,575 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) [2021-05-21 20:22:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5871 transitions. [2021-05-21 20:22:35,579 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5871 transitions. Word has length 25 [2021-05-21 20:22:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:35,579 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5871 transitions. [2021-05-21 20:22:35,579 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) [2021-05-21 20:22:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5871 transitions. [2021-05-21 20:22:35,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:35,582 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:35,582 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] [2021-05-21 20:22:35,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-21 20:22:35,582 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]=== [2021-05-21 20:22:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash 887309661, now seen corresponding path program 63 times [2021-05-21 20:22:35,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:35,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987223165] [2021-05-21 20:22:35,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:35,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:35,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987223165] [2021-05-21 20:22:35,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987223165] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:35,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:35,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:35,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021936855] [2021-05-21 20:22:35,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:35,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:35,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:35,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:35,678 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) [2021-05-21 20:22:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:35,734 INFO L93 Difference]: Finished difference Result 2944 states and 10950 transitions. [2021-05-21 20:22:35,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:35,734 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 [2021-05-21 20:22:35,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:35,739 INFO L225 Difference]: With dead ends: 2944 [2021-05-21 20:22:35,739 INFO L226 Difference]: Without dead ends: 2785 [2021-05-21 20:22:35,740 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 [2021-05-21 20:22:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-05-21 20:22:35,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 1490. [2021-05-21 20:22:35,777 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) [2021-05-21 20:22:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5919 transitions. [2021-05-21 20:22:35,780 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5919 transitions. Word has length 25 [2021-05-21 20:22:35,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:35,780 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5919 transitions. [2021-05-21 20:22:35,780 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) [2021-05-21 20:22:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5919 transitions. [2021-05-21 20:22:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:35,783 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:35,783 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] [2021-05-21 20:22:35,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-21 20:22:35,783 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]=== [2021-05-21 20:22:35,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:35,783 INFO L82 PathProgramCache]: Analyzing trace with hash 857449983, now seen corresponding path program 64 times [2021-05-21 20:22:35,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:35,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856295390] [2021-05-21 20:22:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:35,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:35,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856295390] [2021-05-21 20:22:35,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856295390] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:35,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:35,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:35,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392986054] [2021-05-21 20:22:35,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:35,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:35,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:35,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:35,875 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) [2021-05-21 20:22:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:35,945 INFO L93 Difference]: Finished difference Result 2968 states and 11026 transitions. [2021-05-21 20:22:35,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:35,945 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 [2021-05-21 20:22:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:35,950 INFO L225 Difference]: With dead ends: 2968 [2021-05-21 20:22:35,950 INFO L226 Difference]: Without dead ends: 2769 [2021-05-21 20:22:35,950 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 [2021-05-21 20:22:35,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2021-05-21 20:22:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1474. [2021-05-21 20:22:35,987 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) [2021-05-21 20:22:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5863 transitions. [2021-05-21 20:22:35,989 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5863 transitions. Word has length 25 [2021-05-21 20:22:35,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:35,990 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5863 transitions. [2021-05-21 20:22:35,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5863 transitions. [2021-05-21 20:22:35,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:35,991 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:35,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:35,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-21 20:22:35,992 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]=== [2021-05-21 20:22:35,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:35,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1502994945, now seen corresponding path program 65 times [2021-05-21 20:22:35,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:35,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878329149] [2021-05-21 20:22:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:36,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:36,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878329149] [2021-05-21 20:22:36,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878329149] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:36,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:36,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:36,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820005182] [2021-05-21 20:22:36,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:36,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:36,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:36,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:36,112 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) [2021-05-21 20:22:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:36,195 INFO L93 Difference]: Finished difference Result 3012 states and 11202 transitions. [2021-05-21 20:22:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:36,195 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 [2021-05-21 20:22:36,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:36,202 INFO L225 Difference]: With dead ends: 3012 [2021-05-21 20:22:36,202 INFO L226 Difference]: Without dead ends: 2825 [2021-05-21 20:22:36,202 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 [2021-05-21 20:22:36,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2021-05-21 20:22:36,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 1502. [2021-05-21 20:22:36,253 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) [2021-05-21 20:22:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5951 transitions. [2021-05-21 20:22:36,257 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5951 transitions. Word has length 25 [2021-05-21 20:22:36,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:36,257 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 5951 transitions. [2021-05-21 20:22:36,257 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) [2021-05-21 20:22:36,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5951 transitions. [2021-05-21 20:22:36,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:36,259 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:36,260 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] [2021-05-21 20:22:36,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-21 20:22:36,260 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]=== [2021-05-21 20:22:36,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:36,260 INFO L82 PathProgramCache]: Analyzing trace with hash 748635357, now seen corresponding path program 66 times [2021-05-21 20:22:36,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:36,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354329422] [2021-05-21 20:22:36,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:36,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:36,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354329422] [2021-05-21 20:22:36,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354329422] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:36,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:36,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:36,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486901933] [2021-05-21 20:22:36,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:36,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:36,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:36,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:36,352 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) [2021-05-21 20:22:36,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:36,437 INFO L93 Difference]: Finished difference Result 3008 states and 11162 transitions. [2021-05-21 20:22:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:36,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:36,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:36,444 INFO L225 Difference]: With dead ends: 3008 [2021-05-21 20:22:36,444 INFO L226 Difference]: Without dead ends: 2789 [2021-05-21 20:22:36,444 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 [2021-05-21 20:22:36,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-05-21 20:22:36,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 1466. [2021-05-21 20:22:36,495 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) [2021-05-21 20:22:36,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5839 transitions. [2021-05-21 20:22:36,498 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5839 transitions. Word has length 25 [2021-05-21 20:22:36,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:36,499 INFO L482 AbstractCegarLoop]: Abstraction has 1466 states and 5839 transitions. [2021-05-21 20:22:36,499 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) [2021-05-21 20:22:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5839 transitions. [2021-05-21 20:22:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:36,501 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:36,501 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] [2021-05-21 20:22:36,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-21 20:22:36,501 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]=== [2021-05-21 20:22:36,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:36,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1699001855, now seen corresponding path program 67 times [2021-05-21 20:22:36,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:36,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159603136] [2021-05-21 20:22:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:36,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:36,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159603136] [2021-05-21 20:22:36,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159603136] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:36,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:36,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:36,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129347157] [2021-05-21 20:22:36,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:36,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:36,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:36,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:36,595 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) [2021-05-21 20:22:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:36,671 INFO L93 Difference]: Finished difference Result 3147 states and 11741 transitions. [2021-05-21 20:22:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:36,672 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 [2021-05-21 20:22:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:36,679 INFO L225 Difference]: With dead ends: 3147 [2021-05-21 20:22:36,679 INFO L226 Difference]: Without dead ends: 2960 [2021-05-21 20:22:36,679 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 [2021-05-21 20:22:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2021-05-21 20:22:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1516. [2021-05-21 20:22:36,733 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) [2021-05-21 20:22:36,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 6028 transitions. [2021-05-21 20:22:36,737 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 6028 transitions. Word has length 25 [2021-05-21 20:22:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:36,737 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 6028 transitions. [2021-05-21 20:22:36,737 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) [2021-05-21 20:22:36,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 6028 transitions. [2021-05-21 20:22:36,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:36,740 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:36,740 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] [2021-05-21 20:22:36,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-21 20:22:36,740 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]=== [2021-05-21 20:22:36,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:36,741 INFO L82 PathProgramCache]: Analyzing trace with hash -344335139, now seen corresponding path program 68 times [2021-05-21 20:22:36,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:36,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42214011] [2021-05-21 20:22:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:36,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:36,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42214011] [2021-05-21 20:22:36,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42214011] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:36,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:36,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:36,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468294320] [2021-05-21 20:22:36,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:36,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:36,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:36,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:36,829 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) [2021-05-21 20:22:36,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:36,920 INFO L93 Difference]: Finished difference Result 3143 states and 11701 transitions. [2021-05-21 20:22:36,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:36,921 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 [2021-05-21 20:22:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:36,928 INFO L225 Difference]: With dead ends: 3143 [2021-05-21 20:22:36,928 INFO L226 Difference]: Without dead ends: 2932 [2021-05-21 20:22:36,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2021-05-21 20:22:36,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1488. [2021-05-21 20:22:36,981 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) [2021-05-21 20:22:36,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5926 transitions. [2021-05-21 20:22:36,985 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5926 transitions. Word has length 25 [2021-05-21 20:22:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:36,986 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5926 transitions. [2021-05-21 20:22:36,986 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) [2021-05-21 20:22:36,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5926 transitions. [2021-05-21 20:22:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:36,989 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:36,989 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:36,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-21 20:22:36,989 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]=== [2021-05-21 20:22:36,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:36,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1391316259, now seen corresponding path program 69 times [2021-05-21 20:22:36,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:36,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014667755] [2021-05-21 20:22:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:37,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:37,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014667755] [2021-05-21 20:22:37,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014667755] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:37,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:37,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:37,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299058764] [2021-05-21 20:22:37,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:37,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:37,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:37,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:37,095 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) [2021-05-21 20:22:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:37,163 INFO L93 Difference]: Finished difference Result 3204 states and 11929 transitions. [2021-05-21 20:22:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:37,163 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 [2021-05-21 20:22:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:37,169 INFO L225 Difference]: With dead ends: 3204 [2021-05-21 20:22:37,169 INFO L226 Difference]: Without dead ends: 3017 [2021-05-21 20:22:37,169 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2021-05-21 20:22:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 1534. [2021-05-21 20:22:37,207 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) [2021-05-21 20:22:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 6083 transitions. [2021-05-21 20:22:37,210 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 6083 transitions. Word has length 25 [2021-05-21 20:22:37,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:37,210 INFO L482 AbstractCegarLoop]: Abstraction has 1534 states and 6083 transitions. [2021-05-21 20:22:37,210 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) [2021-05-21 20:22:37,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 6083 transitions. [2021-05-21 20:22:37,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:37,212 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:37,212 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] [2021-05-21 20:22:37,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-21 20:22:37,213 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]=== [2021-05-21 20:22:37,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:37,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1310426403, now seen corresponding path program 70 times [2021-05-21 20:22:37,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:37,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419267261] [2021-05-21 20:22:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:37,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:37,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419267261] [2021-05-21 20:22:37,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419267261] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:37,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:37,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:37,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519281483] [2021-05-21 20:22:37,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:37,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:37,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:37,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:37,307 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) [2021-05-21 20:22:37,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:37,372 INFO L93 Difference]: Finished difference Result 3239 states and 12018 transitions. [2021-05-21 20:22:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:37,373 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 [2021-05-21 20:22:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:37,378 INFO L225 Difference]: With dead ends: 3239 [2021-05-21 20:22:37,379 INFO L226 Difference]: Without dead ends: 2971 [2021-05-21 20:22:37,379 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 [2021-05-21 20:22:37,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2021-05-21 20:22:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1488. [2021-05-21 20:22:37,419 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) [2021-05-21 20:22:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5904 transitions. [2021-05-21 20:22:37,422 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5904 transitions. Word has length 25 [2021-05-21 20:22:37,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:37,423 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5904 transitions. [2021-05-21 20:22:37,423 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) [2021-05-21 20:22:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5904 transitions. [2021-05-21 20:22:37,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:37,425 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:37,425 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] [2021-05-21 20:22:37,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-21 20:22:37,425 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]=== [2021-05-21 20:22:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:37,425 INFO L82 PathProgramCache]: Analyzing trace with hash -408968645, now seen corresponding path program 71 times [2021-05-21 20:22:37,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:37,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435121781] [2021-05-21 20:22:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:37,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:37,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435121781] [2021-05-21 20:22:37,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435121781] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:37,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:37,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:37,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007269177] [2021-05-21 20:22:37,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:37,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:37,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:37,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:37,534 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) [2021-05-21 20:22:37,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:37,625 INFO L93 Difference]: Finished difference Result 3194 states and 11876 transitions. [2021-05-21 20:22:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:37,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:37,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:37,632 INFO L225 Difference]: With dead ends: 3194 [2021-05-21 20:22:37,632 INFO L226 Difference]: Without dead ends: 3011 [2021-05-21 20:22:37,633 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 [2021-05-21 20:22:37,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-05-21 20:22:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1532. [2021-05-21 20:22:37,686 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) [2021-05-21 20:22:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 6056 transitions. [2021-05-21 20:22:37,690 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 6056 transitions. Word has length 25 [2021-05-21 20:22:37,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:37,690 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 6056 transitions. [2021-05-21 20:22:37,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:37,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 6056 transitions. [2021-05-21 20:22:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:37,693 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:37,693 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:37,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-21 20:22:37,693 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]=== [2021-05-21 20:22:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:37,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1478487651, now seen corresponding path program 72 times [2021-05-21 20:22:37,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:37,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200074442] [2021-05-21 20:22:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:37,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:37,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200074442] [2021-05-21 20:22:37,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200074442] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:37,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:37,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:37,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742693973] [2021-05-21 20:22:37,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:37,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:37,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:37,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:37,801 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) [2021-05-21 20:22:37,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:37,878 INFO L93 Difference]: Finished difference Result 3233 states and 11979 transitions. [2021-05-21 20:22:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:37,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:37,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:37,886 INFO L225 Difference]: With dead ends: 3233 [2021-05-21 20:22:37,886 INFO L226 Difference]: Without dead ends: 2937 [2021-05-21 20:22:37,886 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:37,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2021-05-21 20:22:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1458. [2021-05-21 20:22:37,938 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) [2021-05-21 20:22:37,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5815 transitions. [2021-05-21 20:22:37,943 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5815 transitions. Word has length 25 [2021-05-21 20:22:37,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:37,943 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5815 transitions. [2021-05-21 20:22:37,943 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) [2021-05-21 20:22:37,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5815 transitions. [2021-05-21 20:22:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:37,945 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:37,945 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:37,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-21 20:22:37,946 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]=== [2021-05-21 20:22:37,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:37,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2109839913, now seen corresponding path program 73 times [2021-05-21 20:22:37,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:37,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888514028] [2021-05-21 20:22:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:38,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:38,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888514028] [2021-05-21 20:22:38,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888514028] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:38,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:38,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:38,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181484851] [2021-05-21 20:22:38,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:38,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:38,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:38,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:38,057 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) [2021-05-21 20:22:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:38,132 INFO L93 Difference]: Finished difference Result 2849 states and 10577 transitions. [2021-05-21 20:22:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:38,133 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 [2021-05-21 20:22:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:38,139 INFO L225 Difference]: With dead ends: 2849 [2021-05-21 20:22:38,139 INFO L226 Difference]: Without dead ends: 2690 [2021-05-21 20:22:38,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-05-21 20:22:38,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1486. [2021-05-21 20:22:38,191 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) [2021-05-21 20:22:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5919 transitions. [2021-05-21 20:22:38,195 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5919 transitions. Word has length 25 [2021-05-21 20:22:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:38,195 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5919 transitions. [2021-05-21 20:22:38,195 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) [2021-05-21 20:22:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5919 transitions. [2021-05-21 20:22:38,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:38,198 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:38,198 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:38,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-21 20:22:38,198 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]=== [2021-05-21 20:22:38,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:38,198 INFO L82 PathProgramCache]: Analyzing trace with hash 595192633, now seen corresponding path program 74 times [2021-05-21 20:22:38,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:38,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449033006] [2021-05-21 20:22:38,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:38,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:38,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449033006] [2021-05-21 20:22:38,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449033006] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:38,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:38,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:38,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376079504] [2021-05-21 20:22:38,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:38,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:38,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:38,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:38,313 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) [2021-05-21 20:22:38,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:38,394 INFO L93 Difference]: Finished difference Result 2879 states and 10670 transitions. [2021-05-21 20:22:38,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:38,395 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 [2021-05-21 20:22:38,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:38,400 INFO L225 Difference]: With dead ends: 2879 [2021-05-21 20:22:38,400 INFO L226 Difference]: Without dead ends: 2674 [2021-05-21 20:22:38,400 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 [2021-05-21 20:22:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-05-21 20:22:38,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1470. [2021-05-21 20:22:38,458 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) [2021-05-21 20:22:38,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5863 transitions. [2021-05-21 20:22:38,460 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5863 transitions. Word has length 25 [2021-05-21 20:22:38,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:38,460 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5863 transitions. [2021-05-21 20:22:38,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5863 transitions. [2021-05-21 20:22:38,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:38,462 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:38,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:38,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-21 20:22:38,463 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]=== [2021-05-21 20:22:38,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:38,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1028777287, now seen corresponding path program 75 times [2021-05-21 20:22:38,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:38,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174862125] [2021-05-21 20:22:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:38,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:38,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174862125] [2021-05-21 20:22:38,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174862125] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:38,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:38,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:38,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371478680] [2021-05-21 20:22:38,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:38,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:38,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:38,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:38,579 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) [2021-05-21 20:22:38,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:38,644 INFO L93 Difference]: Finished difference Result 2847 states and 10564 transitions. [2021-05-21 20:22:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:38,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:38,651 INFO L225 Difference]: With dead ends: 2847 [2021-05-21 20:22:38,651 INFO L226 Difference]: Without dead ends: 2688 [2021-05-21 20:22:38,651 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 [2021-05-21 20:22:38,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2021-05-21 20:22:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 1486. [2021-05-21 20:22:38,702 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) [2021-05-21 20:22:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5911 transitions. [2021-05-21 20:22:38,706 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5911 transitions. Word has length 25 [2021-05-21 20:22:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:38,707 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5911 transitions. [2021-05-21 20:22:38,707 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) [2021-05-21 20:22:38,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5911 transitions. [2021-05-21 20:22:38,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:38,709 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:38,709 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] [2021-05-21 20:22:38,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-21 20:22:38,710 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]=== [2021-05-21 20:22:38,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:38,710 INFO L82 PathProgramCache]: Analyzing trace with hash -20479303, now seen corresponding path program 76 times [2021-05-21 20:22:38,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:38,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805492614] [2021-05-21 20:22:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:38,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:38,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805492614] [2021-05-21 20:22:38,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805492614] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:38,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:38,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:38,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039815622] [2021-05-21 20:22:38,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:38,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:38,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:38,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:38,825 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) [2021-05-21 20:22:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:38,915 INFO L93 Difference]: Finished difference Result 2875 states and 10652 transitions. [2021-05-21 20:22:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:38,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:38,921 INFO L225 Difference]: With dead ends: 2875 [2021-05-21 20:22:38,921 INFO L226 Difference]: Without dead ends: 2672 [2021-05-21 20:22:38,921 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 [2021-05-21 20:22:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-05-21 20:22:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1470. [2021-05-21 20:22:38,956 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) [2021-05-21 20:22:38,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5855 transitions. [2021-05-21 20:22:38,959 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5855 transitions. Word has length 25 [2021-05-21 20:22:38,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:38,959 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5855 transitions. [2021-05-21 20:22:38,959 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) [2021-05-21 20:22:38,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5855 transitions. [2021-05-21 20:22:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:38,961 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:38,961 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] [2021-05-21 20:22:38,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-21 20:22:38,961 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]=== [2021-05-21 20:22:38,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:38,962 INFO L82 PathProgramCache]: Analyzing trace with hash 388384667, now seen corresponding path program 77 times [2021-05-21 20:22:38,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:38,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468539465] [2021-05-21 20:22:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:39,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:39,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468539465] [2021-05-21 20:22:39,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468539465] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:39,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:39,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:39,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083679592] [2021-05-21 20:22:39,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:39,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:39,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:39,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:39,071 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) [2021-05-21 20:22:39,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:39,154 INFO L93 Difference]: Finished difference Result 2921 states and 10833 transitions. [2021-05-21 20:22:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:39,155 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 [2021-05-21 20:22:39,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:39,160 INFO L225 Difference]: With dead ends: 2921 [2021-05-21 20:22:39,160 INFO L226 Difference]: Without dead ends: 2732 [2021-05-21 20:22:39,160 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 [2021-05-21 20:22:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-05-21 20:22:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1500. [2021-05-21 20:22:39,199 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) [2021-05-21 20:22:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5948 transitions. [2021-05-21 20:22:39,203 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5948 transitions. Word has length 25 [2021-05-21 20:22:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:39,203 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5948 transitions. [2021-05-21 20:22:39,204 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) [2021-05-21 20:22:39,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5948 transitions. [2021-05-21 20:22:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:39,206 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:39,206 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:39,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-21 20:22:39,207 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]=== [2021-05-21 20:22:39,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:39,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1654952327, now seen corresponding path program 78 times [2021-05-21 20:22:39,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:39,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027369135] [2021-05-21 20:22:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:39,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:39,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027369135] [2021-05-21 20:22:39,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027369135] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:39,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:39,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:39,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222740019] [2021-05-21 20:22:39,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:39,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:39,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:39,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:39,314 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) [2021-05-21 20:22:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:39,396 INFO L93 Difference]: Finished difference Result 2919 states and 10798 transitions. [2021-05-21 20:22:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:39,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:39,402 INFO L225 Difference]: With dead ends: 2919 [2021-05-21 20:22:39,403 INFO L226 Difference]: Without dead ends: 2694 [2021-05-21 20:22:39,403 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:39,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-05-21 20:22:39,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1462. [2021-05-21 20:22:39,455 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) [2021-05-21 20:22:39,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5831 transitions. [2021-05-21 20:22:39,459 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5831 transitions. Word has length 25 [2021-05-21 20:22:39,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:39,460 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5831 transitions. [2021-05-21 20:22:39,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:39,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5831 transitions. [2021-05-21 20:22:39,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:39,462 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:39,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:39,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-21 20:22:39,463 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]=== [2021-05-21 20:22:39,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:39,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1704225337, now seen corresponding path program 79 times [2021-05-21 20:22:39,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:39,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015779335] [2021-05-21 20:22:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:39,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:39,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015779335] [2021-05-21 20:22:39,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015779335] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:39,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:39,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:39,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402053829] [2021-05-21 20:22:39,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:39,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:39,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:39,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:39,564 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) [2021-05-21 20:22:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:39,634 INFO L93 Difference]: Finished difference Result 2843 states and 10554 transitions. [2021-05-21 20:22:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:39,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:39,640 INFO L225 Difference]: With dead ends: 2843 [2021-05-21 20:22:39,641 INFO L226 Difference]: Without dead ends: 2684 [2021-05-21 20:22:39,641 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 [2021-05-21 20:22:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-05-21 20:22:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1486. [2021-05-21 20:22:39,691 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) [2021-05-21 20:22:39,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5915 transitions. [2021-05-21 20:22:39,695 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5915 transitions. Word has length 25 [2021-05-21 20:22:39,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:39,695 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5915 transitions. [2021-05-21 20:22:39,695 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) [2021-05-21 20:22:39,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5915 transitions. [2021-05-21 20:22:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:39,698 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:39,698 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] [2021-05-21 20:22:39,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-21 20:22:39,699 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]=== [2021-05-21 20:22:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:39,699 INFO L82 PathProgramCache]: Analyzing trace with hash 114290587, now seen corresponding path program 80 times [2021-05-21 20:22:39,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:39,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448096218] [2021-05-21 20:22:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:39,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:39,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448096218] [2021-05-21 20:22:39,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448096218] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:39,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:39,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:39,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369468479] [2021-05-21 20:22:39,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:39,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:39,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:39,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:39,798 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) [2021-05-21 20:22:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:39,870 INFO L93 Difference]: Finished difference Result 2873 states and 10647 transitions. [2021-05-21 20:22:39,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:39,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:39,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:39,875 INFO L225 Difference]: With dead ends: 2873 [2021-05-21 20:22:39,875 INFO L226 Difference]: Without dead ends: 2668 [2021-05-21 20:22:39,875 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 [2021-05-21 20:22:39,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2021-05-21 20:22:39,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 1470. [2021-05-21 20:22:39,911 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) [2021-05-21 20:22:39,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5859 transitions. [2021-05-21 20:22:39,913 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5859 transitions. Word has length 25 [2021-05-21 20:22:39,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:39,914 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5859 transitions. [2021-05-21 20:22:39,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:39,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5859 transitions. [2021-05-21 20:22:39,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:39,916 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:39,916 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:39,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-21 20:22:39,916 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]=== [2021-05-21 20:22:39,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:39,916 INFO L82 PathProgramCache]: Analyzing trace with hash 15979065, now seen corresponding path program 81 times [2021-05-21 20:22:39,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:39,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858567818] [2021-05-21 20:22:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:40,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:40,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858567818] [2021-05-21 20:22:40,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858567818] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:40,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:40,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:40,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774056450] [2021-05-21 20:22:40,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:40,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:40,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:40,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:40,013 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) [2021-05-21 20:22:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:40,068 INFO L93 Difference]: Finished difference Result 2837 states and 10529 transitions. [2021-05-21 20:22:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:40,068 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 [2021-05-21 20:22:40,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:40,073 INFO L225 Difference]: With dead ends: 2837 [2021-05-21 20:22:40,073 INFO L226 Difference]: Without dead ends: 2678 [2021-05-21 20:22:40,073 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 [2021-05-21 20:22:40,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2021-05-21 20:22:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1486. [2021-05-21 20:22:40,112 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) [2021-05-21 20:22:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5907 transitions. [2021-05-21 20:22:40,115 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5907 transitions. Word has length 25 [2021-05-21 20:22:40,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:40,115 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5907 transitions. [2021-05-21 20:22:40,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:40,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5907 transitions. [2021-05-21 20:22:40,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:40,117 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:40,117 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] [2021-05-21 20:22:40,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-05-21 20:22:40,117 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]=== [2021-05-21 20:22:40,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:40,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1696475705, now seen corresponding path program 82 times [2021-05-21 20:22:40,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:40,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291976082] [2021-05-21 20:22:40,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:40,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:40,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291976082] [2021-05-21 20:22:40,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291976082] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:40,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:40,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:40,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424699661] [2021-05-21 20:22:40,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:40,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:40,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:40,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:40,202 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) [2021-05-21 20:22:40,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:40,276 INFO L93 Difference]: Finished difference Result 2861 states and 10605 transitions. [2021-05-21 20:22:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:40,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:40,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:40,281 INFO L225 Difference]: With dead ends: 2861 [2021-05-21 20:22:40,281 INFO L226 Difference]: Without dead ends: 2662 [2021-05-21 20:22:40,281 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 [2021-05-21 20:22:40,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2021-05-21 20:22:40,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 1470. [2021-05-21 20:22:40,316 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) [2021-05-21 20:22:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5851 transitions. [2021-05-21 20:22:40,319 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5851 transitions. Word has length 25 [2021-05-21 20:22:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:40,319 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5851 transitions. [2021-05-21 20:22:40,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5851 transitions. [2021-05-21 20:22:40,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:40,321 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:40,321 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:40,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-21 20:22:40,321 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]=== [2021-05-21 20:22:40,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:40,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1433141019, now seen corresponding path program 83 times [2021-05-21 20:22:40,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:40,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597087242] [2021-05-21 20:22:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:40,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:40,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597087242] [2021-05-21 20:22:40,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597087242] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:40,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:40,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:40,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478915954] [2021-05-21 20:22:40,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:40,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:40,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:40,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:40,418 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) [2021-05-21 20:22:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:40,479 INFO L93 Difference]: Finished difference Result 2909 states and 10791 transitions. [2021-05-21 20:22:40,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:40,480 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 [2021-05-21 20:22:40,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:40,485 INFO L225 Difference]: With dead ends: 2909 [2021-05-21 20:22:40,485 INFO L226 Difference]: Without dead ends: 2720 [2021-05-21 20:22:40,485 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 [2021-05-21 20:22:40,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2021-05-21 20:22:40,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1498. [2021-05-21 20:22:40,523 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) [2021-05-21 20:22:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5939 transitions. [2021-05-21 20:22:40,526 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5939 transitions. Word has length 25 [2021-05-21 20:22:40,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:40,526 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5939 transitions. [2021-05-21 20:22:40,526 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) [2021-05-21 20:22:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5939 transitions. [2021-05-21 20:22:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:40,528 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:40,528 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] [2021-05-21 20:22:40,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-21 20:22:40,528 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]=== [2021-05-21 20:22:40,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:40,529 INFO L82 PathProgramCache]: Analyzing trace with hash 40996473, now seen corresponding path program 84 times [2021-05-21 20:22:40,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:40,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557409021] [2021-05-21 20:22:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:40,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:40,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557409021] [2021-05-21 20:22:40,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557409021] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:40,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:40,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:40,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869162099] [2021-05-21 20:22:40,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:40,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:40,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:40,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:40,607 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) [2021-05-21 20:22:40,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:40,668 INFO L93 Difference]: Finished difference Result 2903 states and 10746 transitions. [2021-05-21 20:22:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:40,669 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:40,673 INFO L225 Difference]: With dead ends: 2903 [2021-05-21 20:22:40,674 INFO L226 Difference]: Without dead ends: 2684 [2021-05-21 20:22:40,674 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 [2021-05-21 20:22:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-05-21 20:22:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1462. [2021-05-21 20:22:40,721 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) [2021-05-21 20:22:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5827 transitions. [2021-05-21 20:22:40,723 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5827 transitions. Word has length 25 [2021-05-21 20:22:40,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:40,723 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5827 transitions. [2021-05-21 20:22:40,723 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) [2021-05-21 20:22:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5827 transitions. [2021-05-21 20:22:40,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:40,725 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:40,725 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] [2021-05-21 20:22:40,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-21 20:22:40,725 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]=== [2021-05-21 20:22:40,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:40,726 INFO L82 PathProgramCache]: Analyzing trace with hash 2092230299, now seen corresponding path program 85 times [2021-05-21 20:22:40,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:40,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110950984] [2021-05-21 20:22:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:40,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:40,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110950984] [2021-05-21 20:22:40,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110950984] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:40,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:40,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:40,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969225307] [2021-05-21 20:22:40,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:40,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:40,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:40,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:40,897 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) [2021-05-21 20:22:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:40,951 INFO L93 Difference]: Finished difference Result 2839 states and 10540 transitions. [2021-05-21 20:22:40,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:40,951 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 [2021-05-21 20:22:40,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:40,958 INFO L225 Difference]: With dead ends: 2839 [2021-05-21 20:22:40,959 INFO L226 Difference]: Without dead ends: 2680 [2021-05-21 20:22:40,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 139.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-05-21 20:22:40,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1486. [2021-05-21 20:22:41,001 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) [2021-05-21 20:22:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5911 transitions. [2021-05-21 20:22:41,003 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5911 transitions. Word has length 25 [2021-05-21 20:22:41,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:41,003 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5911 transitions. [2021-05-21 20:22:41,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5911 transitions. [2021-05-21 20:22:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:41,005 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:41,005 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:41,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-05-21 20:22:41,006 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]=== [2021-05-21 20:22:41,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:41,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1194439013, now seen corresponding path program 86 times [2021-05-21 20:22:41,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:41,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501822458] [2021-05-21 20:22:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:41,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:41,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501822458] [2021-05-21 20:22:41,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501822458] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:41,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:41,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:41,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821345230] [2021-05-21 20:22:41,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:41,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:41,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:41,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:41,110 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) [2021-05-21 20:22:41,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:41,170 INFO L93 Difference]: Finished difference Result 2867 states and 10628 transitions. [2021-05-21 20:22:41,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:41,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:41,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:41,175 INFO L225 Difference]: With dead ends: 2867 [2021-05-21 20:22:41,175 INFO L226 Difference]: Without dead ends: 2664 [2021-05-21 20:22:41,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-05-21 20:22:41,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 1470. [2021-05-21 20:22:41,214 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) [2021-05-21 20:22:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5855 transitions. [2021-05-21 20:22:41,217 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5855 transitions. Word has length 25 [2021-05-21 20:22:41,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:41,217 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5855 transitions. [2021-05-21 20:22:41,217 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) [2021-05-21 20:22:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5855 transitions. [2021-05-21 20:22:41,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:41,219 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:41,219 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] [2021-05-21 20:22:41,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-05-21 20:22:41,219 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]=== [2021-05-21 20:22:41,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:41,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1245433337, now seen corresponding path program 87 times [2021-05-21 20:22:41,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:41,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105568442] [2021-05-21 20:22:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:41,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:41,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105568442] [2021-05-21 20:22:41,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105568442] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:41,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:41,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:41,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897946577] [2021-05-21 20:22:41,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:41,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:41,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:41,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:41,304 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) [2021-05-21 20:22:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:41,354 INFO L93 Difference]: Finished difference Result 2835 states and 10520 transitions. [2021-05-21 20:22:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:41,354 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 [2021-05-21 20:22:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:41,359 INFO L225 Difference]: With dead ends: 2835 [2021-05-21 20:22:41,359 INFO L226 Difference]: Without dead ends: 2676 [2021-05-21 20:22:41,359 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 [2021-05-21 20:22:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-05-21 20:22:41,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 1486. [2021-05-21 20:22:41,396 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) [2021-05-21 20:22:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5903 transitions. [2021-05-21 20:22:41,399 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5903 transitions. Word has length 25 [2021-05-21 20:22:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:41,399 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5903 transitions. [2021-05-21 20:22:41,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5903 transitions. [2021-05-21 20:22:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:41,401 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:41,401 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:41,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-05-21 20:22:41,401 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]=== [2021-05-21 20:22:41,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:41,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1215573659, now seen corresponding path program 88 times [2021-05-21 20:22:41,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:41,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411001671] [2021-05-21 20:22:41,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:41,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:41,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411001671] [2021-05-21 20:22:41,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411001671] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:41,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:41,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:41,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788317327] [2021-05-21 20:22:41,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:41,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:41,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:41,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:41,480 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) [2021-05-21 20:22:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:41,542 INFO L93 Difference]: Finished difference Result 2859 states and 10596 transitions. [2021-05-21 20:22:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:41,542 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 [2021-05-21 20:22:41,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:41,547 INFO L225 Difference]: With dead ends: 2859 [2021-05-21 20:22:41,547 INFO L226 Difference]: Without dead ends: 2660 [2021-05-21 20:22:41,547 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 [2021-05-21 20:22:41,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-05-21 20:22:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 1470. [2021-05-21 20:22:41,582 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) [2021-05-21 20:22:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5847 transitions. [2021-05-21 20:22:41,585 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5847 transitions. Word has length 25 [2021-05-21 20:22:41,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:41,585 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5847 transitions. [2021-05-21 20:22:41,585 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) [2021-05-21 20:22:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5847 transitions. [2021-05-21 20:22:41,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:41,587 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:41,587 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] [2021-05-21 20:22:41,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-21 20:22:41,587 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]=== [2021-05-21 20:22:41,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:41,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1144871269, now seen corresponding path program 89 times [2021-05-21 20:22:41,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:41,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108080] [2021-05-21 20:22:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:41,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:41,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108080] [2021-05-21 20:22:41,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108080] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:41,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:41,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:41,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130440472] [2021-05-21 20:22:41,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:41,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:41,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:41,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:41,669 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) [2021-05-21 20:22:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:41,728 INFO L93 Difference]: Finished difference Result 2903 states and 10772 transitions. [2021-05-21 20:22:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:41,729 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 [2021-05-21 20:22:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:41,734 INFO L225 Difference]: With dead ends: 2903 [2021-05-21 20:22:41,734 INFO L226 Difference]: Without dead ends: 2716 [2021-05-21 20:22:41,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2021-05-21 20:22:41,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 1498. [2021-05-21 20:22:41,769 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) [2021-05-21 20:22:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5935 transitions. [2021-05-21 20:22:41,772 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5935 transitions. Word has length 25 [2021-05-21 20:22:41,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:41,772 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5935 transitions. [2021-05-21 20:22:41,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5935 transitions. [2021-05-21 20:22:41,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:41,774 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:41,774 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:41,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-05-21 20:22:41,774 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]=== [2021-05-21 20:22:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:41,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1106759033, now seen corresponding path program 90 times [2021-05-21 20:22:41,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:41,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284013686] [2021-05-21 20:22:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:41,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:41,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284013686] [2021-05-21 20:22:41,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284013686] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:41,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:41,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:41,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968676409] [2021-05-21 20:22:41,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:41,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:41,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:41,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:41,856 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) [2021-05-21 20:22:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:41,917 INFO L93 Difference]: Finished difference Result 2899 states and 10732 transitions. [2021-05-21 20:22:41,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:41,917 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 [2021-05-21 20:22:41,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:41,922 INFO L225 Difference]: With dead ends: 2899 [2021-05-21 20:22:41,922 INFO L226 Difference]: Without dead ends: 2680 [2021-05-21 20:22:41,922 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 [2021-05-21 20:22:41,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-05-21 20:22:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1462. [2021-05-21 20:22:41,957 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) [2021-05-21 20:22:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5823 transitions. [2021-05-21 20:22:41,960 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5823 transitions. Word has length 25 [2021-05-21 20:22:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:41,960 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5823 transitions. [2021-05-21 20:22:41,960 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) [2021-05-21 20:22:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5823 transitions. [2021-05-21 20:22:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:41,962 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:41,962 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] [2021-05-21 20:22:41,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-21 20:22:41,962 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]=== [2021-05-21 20:22:41,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:41,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1478632707, now seen corresponding path program 91 times [2021-05-21 20:22:41,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:41,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555208618] [2021-05-21 20:22:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:42,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:42,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555208618] [2021-05-21 20:22:42,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555208618] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:42,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:42,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:42,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103032911] [2021-05-21 20:22:42,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:42,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:42,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:42,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:42,045 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) [2021-05-21 20:22:42,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:42,106 INFO L93 Difference]: Finished difference Result 2975 states and 11062 transitions. [2021-05-21 20:22:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:42,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:42,112 INFO L225 Difference]: With dead ends: 2975 [2021-05-21 20:22:42,112 INFO L226 Difference]: Without dead ends: 2786 [2021-05-21 20:22:42,112 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 [2021-05-21 20:22:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-05-21 20:22:42,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1506. [2021-05-21 20:22:42,148 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) [2021-05-21 20:22:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5981 transitions. [2021-05-21 20:22:42,151 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5981 transitions. Word has length 25 [2021-05-21 20:22:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:42,151 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5981 transitions. [2021-05-21 20:22:42,151 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) [2021-05-21 20:22:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5981 transitions. [2021-05-21 20:22:42,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:42,153 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:42,153 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:42,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-05-21 20:22:42,153 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]=== [2021-05-21 20:22:42,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:42,154 INFO L82 PathProgramCache]: Analyzing trace with hash 772997595, now seen corresponding path program 92 times [2021-05-21 20:22:42,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:42,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28220035] [2021-05-21 20:22:42,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:42,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:42,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28220035] [2021-05-21 20:22:42,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28220035] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:42,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:42,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:42,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50302118] [2021-05-21 20:22:42,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:42,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:42,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:42,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:42,250 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) [2021-05-21 20:22:42,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:42,320 INFO L93 Difference]: Finished difference Result 2973 states and 11027 transitions. [2021-05-21 20:22:42,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:42,320 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 [2021-05-21 20:22:42,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:42,325 INFO L225 Difference]: With dead ends: 2973 [2021-05-21 20:22:42,325 INFO L226 Difference]: Without dead ends: 2756 [2021-05-21 20:22:42,325 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 [2021-05-21 20:22:42,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-05-21 20:22:42,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1476. [2021-05-21 20:22:42,364 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) [2021-05-21 20:22:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5874 transitions. [2021-05-21 20:22:42,367 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5874 transitions. Word has length 25 [2021-05-21 20:22:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:42,367 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5874 transitions. [2021-05-21 20:22:42,367 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) [2021-05-21 20:22:42,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5874 transitions. [2021-05-21 20:22:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:42,369 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:42,369 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] [2021-05-21 20:22:42,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-05-21 20:22:42,369 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]=== [2021-05-21 20:22:42,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:42,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1969537627, now seen corresponding path program 93 times [2021-05-21 20:22:42,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:42,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756332602] [2021-05-21 20:22:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:42,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:42,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756332602] [2021-05-21 20:22:42,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756332602] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:42,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:42,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:42,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649806695] [2021-05-21 20:22:42,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:42,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:42,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:42,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:42,445 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) [2021-05-21 20:22:42,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:42,512 INFO L93 Difference]: Finished difference Result 2969 states and 11029 transitions. [2021-05-21 20:22:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:42,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:42,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:42,518 INFO L225 Difference]: With dead ends: 2969 [2021-05-21 20:22:42,518 INFO L226 Difference]: Without dead ends: 2780 [2021-05-21 20:22:42,518 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 [2021-05-21 20:22:42,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2021-05-21 20:22:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 1504. [2021-05-21 20:22:42,554 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) [2021-05-21 20:22:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5962 transitions. [2021-05-21 20:22:42,556 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5962 transitions. Word has length 25 [2021-05-21 20:22:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:42,556 INFO L482 AbstractCegarLoop]: Abstraction has 1504 states and 5962 transitions. [2021-05-21 20:22:42,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5962 transitions. [2021-05-21 20:22:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:42,558 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:42,558 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:42,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-05-21 20:22:42,559 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]=== [2021-05-21 20:22:42,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:42,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1132963237, now seen corresponding path program 94 times [2021-05-21 20:22:42,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:42,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649241914] [2021-05-21 20:22:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:42,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:42,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649241914] [2021-05-21 20:22:42,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649241914] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:42,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:42,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:42,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898420568] [2021-05-21 20:22:42,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:42,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:42,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:42,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:42,644 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) [2021-05-21 20:22:42,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:42,707 INFO L93 Difference]: Finished difference Result 2963 states and 10984 transitions. [2021-05-21 20:22:42,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:42,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:42,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:42,712 INFO L225 Difference]: With dead ends: 2963 [2021-05-21 20:22:42,712 INFO L226 Difference]: Without dead ends: 2752 [2021-05-21 20:22:42,712 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 [2021-05-21 20:22:42,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2021-05-21 20:22:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 1476. [2021-05-21 20:22:42,763 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) [2021-05-21 20:22:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5860 transitions. [2021-05-21 20:22:42,765 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5860 transitions. Word has length 25 [2021-05-21 20:22:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:42,766 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5860 transitions. [2021-05-21 20:22:42,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:42,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5860 transitions. [2021-05-21 20:22:42,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:42,767 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:42,767 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:42,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-05-21 20:22:42,768 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]=== [2021-05-21 20:22:42,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:42,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1343082055, now seen corresponding path program 95 times [2021-05-21 20:22:42,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:42,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910277271] [2021-05-21 20:22:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:42,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:42,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910277271] [2021-05-21 20:22:42,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910277271] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:42,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:42,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:42,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101344110] [2021-05-21 20:22:42,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:42,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:42,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:42,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:42,849 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) [2021-05-21 20:22:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:42,926 INFO L93 Difference]: Finished difference Result 2965 states and 11005 transitions. [2021-05-21 20:22:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:42,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:42,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:42,932 INFO L225 Difference]: With dead ends: 2965 [2021-05-21 20:22:42,932 INFO L226 Difference]: Without dead ends: 2778 [2021-05-21 20:22:42,933 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 [2021-05-21 20:22:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2021-05-21 20:22:42,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 1504. [2021-05-21 20:22:42,970 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) [2021-05-21 20:22:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5948 transitions. [2021-05-21 20:22:42,972 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5948 transitions. Word has length 25 [2021-05-21 20:22:42,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:42,973 INFO L482 AbstractCegarLoop]: Abstraction has 1504 states and 5948 transitions. [2021-05-21 20:22:42,973 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) [2021-05-21 20:22:42,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5948 transitions. [2021-05-21 20:22:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:42,975 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:42,975 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] [2021-05-21 20:22:42,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-05-21 20:22:42,975 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]=== [2021-05-21 20:22:42,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:42,975 INFO L82 PathProgramCache]: Analyzing trace with hash -262019429, now seen corresponding path program 96 times [2021-05-21 20:22:42,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:42,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785244491] [2021-05-21 20:22:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:43,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:43,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785244491] [2021-05-21 20:22:43,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785244491] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:43,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:43,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:43,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962341422] [2021-05-21 20:22:43,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:43,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:43,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:43,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:43,054 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) [2021-05-21 20:22:43,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:43,118 INFO L93 Difference]: Finished difference Result 2961 states and 10965 transitions. [2021-05-21 20:22:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:43,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:43,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:43,123 INFO L225 Difference]: With dead ends: 2961 [2021-05-21 20:22:43,123 INFO L226 Difference]: Without dead ends: 2732 [2021-05-21 20:22:43,124 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 [2021-05-21 20:22:43,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-05-21 20:22:43,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1458. [2021-05-21 20:22:43,160 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) [2021-05-21 20:22:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5813 transitions. [2021-05-21 20:22:43,162 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5813 transitions. Word has length 25 [2021-05-21 20:22:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:43,163 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5813 transitions. [2021-05-21 20:22:43,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5813 transitions. [2021-05-21 20:22:43,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:43,164 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:43,164 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:43,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-05-21 20:22:43,165 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]=== [2021-05-21 20:22:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:43,165 INFO L82 PathProgramCache]: Analyzing trace with hash 847937503, now seen corresponding path program 97 times [2021-05-21 20:22:43,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:43,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080455653] [2021-05-21 20:22:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:43,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:43,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080455653] [2021-05-21 20:22:43,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080455653] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:43,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:43,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:43,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363209459] [2021-05-21 20:22:43,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:43,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:43,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:43,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:43,264 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) [2021-05-21 20:22:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:43,325 INFO L93 Difference]: Finished difference Result 3229 states and 12055 transitions. [2021-05-21 20:22:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:43,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:43,330 INFO L225 Difference]: With dead ends: 3229 [2021-05-21 20:22:43,331 INFO L226 Difference]: Without dead ends: 3040 [2021-05-21 20:22:43,331 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 [2021-05-21 20:22:43,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-05-21 20:22:43,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1525. [2021-05-21 20:22:43,369 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) [2021-05-21 20:22:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 6063 transitions. [2021-05-21 20:22:43,373 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 6063 transitions. Word has length 25 [2021-05-21 20:22:43,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:43,373 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 6063 transitions. [2021-05-21 20:22:43,373 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) [2021-05-21 20:22:43,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 6063 transitions. [2021-05-21 20:22:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:43,375 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:43,375 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] [2021-05-21 20:22:43,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-05-21 20:22:43,375 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]=== [2021-05-21 20:22:43,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:43,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1195399491, now seen corresponding path program 98 times [2021-05-21 20:22:43,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:43,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060412234] [2021-05-21 20:22:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:43,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:43,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060412234] [2021-05-21 20:22:43,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060412234] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:43,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:43,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:43,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233861265] [2021-05-21 20:22:43,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:43,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:43,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:43,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:43,469 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) [2021-05-21 20:22:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:43,534 INFO L93 Difference]: Finished difference Result 3227 states and 12020 transitions. [2021-05-21 20:22:43,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:43,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:43,539 INFO L225 Difference]: With dead ends: 3227 [2021-05-21 20:22:43,540 INFO L226 Difference]: Without dead ends: 3010 [2021-05-21 20:22:43,540 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 [2021-05-21 20:22:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2021-05-21 20:22:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1495. [2021-05-21 20:22:43,577 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) [2021-05-21 20:22:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 5956 transitions. [2021-05-21 20:22:43,580 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 5956 transitions. Word has length 25 [2021-05-21 20:22:43,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:43,580 INFO L482 AbstractCegarLoop]: Abstraction has 1495 states and 5956 transitions. [2021-05-21 20:22:43,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:43,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 5956 transitions. [2021-05-21 20:22:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:43,582 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:43,582 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] [2021-05-21 20:22:43,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-21 20:22:43,582 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]=== [2021-05-21 20:22:43,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:43,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1140541, now seen corresponding path program 99 times [2021-05-21 20:22:43,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:43,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688003387] [2021-05-21 20:22:43,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:43,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:43,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688003387] [2021-05-21 20:22:43,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688003387] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:43,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:43,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:43,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112657598] [2021-05-21 20:22:43,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:43,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:43,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:43,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:43,674 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) [2021-05-21 20:22:43,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:43,738 INFO L93 Difference]: Finished difference Result 3223 states and 12022 transitions. [2021-05-21 20:22:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:43,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:43,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:43,744 INFO L225 Difference]: With dead ends: 3223 [2021-05-21 20:22:43,744 INFO L226 Difference]: Without dead ends: 3034 [2021-05-21 20:22:43,744 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 [2021-05-21 20:22:43,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2021-05-21 20:22:43,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 1523. [2021-05-21 20:22:43,783 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) [2021-05-21 20:22:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 6044 transitions. [2021-05-21 20:22:43,785 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 6044 transitions. Word has length 25 [2021-05-21 20:22:43,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:43,786 INFO L482 AbstractCegarLoop]: Abstraction has 1523 states and 6044 transitions. [2021-05-21 20:22:43,786 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) [2021-05-21 20:22:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 6044 transitions. [2021-05-21 20:22:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:43,787 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:43,788 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:43,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-05-21 20:22:43,788 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]=== [2021-05-21 20:22:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:43,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1193606973, now seen corresponding path program 100 times [2021-05-21 20:22:43,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:43,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137950145] [2021-05-21 20:22:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:43,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:43,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137950145] [2021-05-21 20:22:43,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137950145] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:43,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:43,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:43,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363738300] [2021-05-21 20:22:43,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:43,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:43,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:43,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:43,880 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) [2021-05-21 20:22:43,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:43,951 INFO L93 Difference]: Finished difference Result 3217 states and 11977 transitions. [2021-05-21 20:22:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:43,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:43,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:43,957 INFO L225 Difference]: With dead ends: 3217 [2021-05-21 20:22:43,957 INFO L226 Difference]: Without dead ends: 3006 [2021-05-21 20:22:43,957 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 [2021-05-21 20:22:43,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-05-21 20:22:43,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1495. [2021-05-21 20:22:43,995 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) [2021-05-21 20:22:43,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 5942 transitions. [2021-05-21 20:22:43,998 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 5942 transitions. Word has length 25 [2021-05-21 20:22:43,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:43,998 INFO L482 AbstractCegarLoop]: Abstraction has 1495 states and 5942 transitions. [2021-05-21 20:22:43,998 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) [2021-05-21 20:22:43,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 5942 transitions. [2021-05-21 20:22:44,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:44,000 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:44,000 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] [2021-05-21 20:22:44,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-05-21 20:22:44,000 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]=== [2021-05-21 20:22:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:44,000 INFO L82 PathProgramCache]: Analyzing trace with hash 983488155, now seen corresponding path program 101 times [2021-05-21 20:22:44,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:44,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369917604] [2021-05-21 20:22:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:44,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:44,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369917604] [2021-05-21 20:22:44,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369917604] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:44,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:44,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:44,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469327970] [2021-05-21 20:22:44,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:44,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:44,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:44,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:44,079 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) [2021-05-21 20:22:44,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:44,137 INFO L93 Difference]: Finished difference Result 3219 states and 11998 transitions. [2021-05-21 20:22:44,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:44,137 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 [2021-05-21 20:22:44,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:44,143 INFO L225 Difference]: With dead ends: 3219 [2021-05-21 20:22:44,143 INFO L226 Difference]: Without dead ends: 3032 [2021-05-21 20:22:44,143 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 [2021-05-21 20:22:44,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-05-21 20:22:44,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1523. [2021-05-21 20:22:44,181 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) [2021-05-21 20:22:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 6030 transitions. [2021-05-21 20:22:44,184 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 6030 transitions. Word has length 25 [2021-05-21 20:22:44,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:44,184 INFO L482 AbstractCegarLoop]: Abstraction has 1523 states and 6030 transitions. [2021-05-21 20:22:44,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 6030 transitions. [2021-05-21 20:22:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:44,186 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:44,186 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] [2021-05-21 20:22:44,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-05-21 20:22:44,186 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]=== [2021-05-21 20:22:44,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:44,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2064550781, now seen corresponding path program 102 times [2021-05-21 20:22:44,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:44,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661498131] [2021-05-21 20:22:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:44,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:44,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661498131] [2021-05-21 20:22:44,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661498131] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:44,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:44,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:44,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618569905] [2021-05-21 20:22:44,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:44,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:44,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:44,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:44,262 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) [2021-05-21 20:22:44,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:44,322 INFO L93 Difference]: Finished difference Result 3215 states and 11958 transitions. [2021-05-21 20:22:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:44,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:44,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:44,328 INFO L225 Difference]: With dead ends: 3215 [2021-05-21 20:22:44,328 INFO L226 Difference]: Without dead ends: 2990 [2021-05-21 20:22:44,328 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 [2021-05-21 20:22:44,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-05-21 20:22:44,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1481. [2021-05-21 20:22:44,366 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) [2021-05-21 20:22:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5898 transitions. [2021-05-21 20:22:44,369 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5898 transitions. Word has length 25 [2021-05-21 20:22:44,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:44,369 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 5898 transitions. [2021-05-21 20:22:44,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:44,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5898 transitions. [2021-05-21 20:22:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:44,371 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:44,371 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:44,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-05-21 20:22:44,371 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]=== [2021-05-21 20:22:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:44,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1125368515, now seen corresponding path program 103 times [2021-05-21 20:22:44,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:44,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233937756] [2021-05-21 20:22:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:44,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:44,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:44,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233937756] [2021-05-21 20:22:44,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233937756] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:44,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:44,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:44,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066938270] [2021-05-21 20:22:44,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:44,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:44,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:44,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:44,450 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) [2021-05-21 20:22:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:44,512 INFO L93 Difference]: Finished difference Result 3346 states and 12460 transitions. [2021-05-21 20:22:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:44,513 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 [2021-05-21 20:22:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:44,519 INFO L225 Difference]: With dead ends: 3346 [2021-05-21 20:22:44,519 INFO L226 Difference]: Without dead ends: 3157 [2021-05-21 20:22:44,519 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 [2021-05-21 20:22:44,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-05-21 20:22:44,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 1550. [2021-05-21 20:22:44,558 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) [2021-05-21 20:22:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 6144 transitions. [2021-05-21 20:22:44,561 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 6144 transitions. Word has length 25 [2021-05-21 20:22:44,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:44,561 INFO L482 AbstractCegarLoop]: Abstraction has 1550 states and 6144 transitions. [2021-05-21 20:22:44,561 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) [2021-05-21 20:22:44,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 6144 transitions. [2021-05-21 20:22:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:44,563 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:44,564 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:44,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-05-21 20:22:44,564 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]=== [2021-05-21 20:22:44,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:44,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1126261787, now seen corresponding path program 104 times [2021-05-21 20:22:44,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:44,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202819596] [2021-05-21 20:22:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:44,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:44,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:44,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202819596] [2021-05-21 20:22:44,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202819596] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:44,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:44,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:44,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172535292] [2021-05-21 20:22:44,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:44,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:44,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:44,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:44,654 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) [2021-05-21 20:22:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:44,719 INFO L93 Difference]: Finished difference Result 3344 states and 12425 transitions. [2021-05-21 20:22:44,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:44,720 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 [2021-05-21 20:22:44,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:44,725 INFO L225 Difference]: With dead ends: 3344 [2021-05-21 20:22:44,725 INFO L226 Difference]: Without dead ends: 3127 [2021-05-21 20:22:44,726 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 [2021-05-21 20:22:44,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2021-05-21 20:22:44,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 1520. [2021-05-21 20:22:44,790 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) [2021-05-21 20:22:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 6036 transitions. [2021-05-21 20:22:44,793 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 6036 transitions. Word has length 25 [2021-05-21 20:22:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:44,793 INFO L482 AbstractCegarLoop]: Abstraction has 1520 states and 6036 transitions. [2021-05-21 20:22:44,793 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) [2021-05-21 20:22:44,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 6036 transitions. [2021-05-21 20:22:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:44,795 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:44,795 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:44,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-05-21 20:22:44,795 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]=== [2021-05-21 20:22:44,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:44,796 INFO L82 PathProgramCache]: Analyzing trace with hash -699628227, now seen corresponding path program 105 times [2021-05-21 20:22:44,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:44,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113872021] [2021-05-21 20:22:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:44,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:44,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113872021] [2021-05-21 20:22:44,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113872021] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:44,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:44,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:44,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370458742] [2021-05-21 20:22:44,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:44,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:44,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:44,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:44,877 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) [2021-05-21 20:22:44,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:44,940 INFO L93 Difference]: Finished difference Result 3414 states and 12679 transitions. [2021-05-21 20:22:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:44,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:44,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:44,946 INFO L225 Difference]: With dead ends: 3414 [2021-05-21 20:22:44,947 INFO L226 Difference]: Without dead ends: 3225 [2021-05-21 20:22:44,947 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 [2021-05-21 20:22:44,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3225 states. [2021-05-21 20:22:44,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3225 to 1583. [2021-05-21 20:22:44,986 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) [2021-05-21 20:22:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 6243 transitions. [2021-05-21 20:22:44,989 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 6243 transitions. Word has length 25 [2021-05-21 20:22:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:44,989 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 6243 transitions. [2021-05-21 20:22:44,989 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) [2021-05-21 20:22:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 6243 transitions. [2021-05-21 20:22:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:44,991 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:44,991 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] [2021-05-21 20:22:44,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-05-21 20:22:44,991 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]=== [2021-05-21 20:22:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:44,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1255416515, now seen corresponding path program 106 times [2021-05-21 20:22:44,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:44,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368936683] [2021-05-21 20:22:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:45,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:45,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368936683] [2021-05-21 20:22:45,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368936683] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:45,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:45,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:45,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937418180] [2021-05-21 20:22:45,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:45,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:45,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:45,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:45,076 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) [2021-05-21 20:22:45,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:45,126 INFO L93 Difference]: Finished difference Result 3447 states and 12762 transitions. [2021-05-21 20:22:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:45,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:45,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:45,132 INFO L225 Difference]: With dead ends: 3447 [2021-05-21 20:22:45,132 INFO L226 Difference]: Without dead ends: 3162 [2021-05-21 20:22:45,132 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 [2021-05-21 20:22:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2021-05-21 20:22:45,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 1520. [2021-05-21 20:22:45,171 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) [2021-05-21 20:22:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 6005 transitions. [2021-05-21 20:22:45,174 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 6005 transitions. Word has length 25 [2021-05-21 20:22:45,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:45,174 INFO L482 AbstractCegarLoop]: Abstraction has 1520 states and 6005 transitions. [2021-05-21 20:22:45,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 6005 transitions. [2021-05-21 20:22:45,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:45,176 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:45,176 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:45,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-05-21 20:22:45,176 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]=== [2021-05-21 20:22:45,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:45,176 INFO L82 PathProgramCache]: Analyzing trace with hash 282719387, now seen corresponding path program 107 times [2021-05-21 20:22:45,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:45,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882318827] [2021-05-21 20:22:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:45,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:45,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882318827] [2021-05-21 20:22:45,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882318827] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:45,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:45,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:45,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865879675] [2021-05-21 20:22:45,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:45,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:45,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:45,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:45,254 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) [2021-05-21 20:22:45,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:45,312 INFO L93 Difference]: Finished difference Result 3393 states and 12587 transitions. [2021-05-21 20:22:45,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:45,312 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 [2021-05-21 20:22:45,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:45,318 INFO L225 Difference]: With dead ends: 3393 [2021-05-21 20:22:45,318 INFO L226 Difference]: Without dead ends: 3206 [2021-05-21 20:22:45,319 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 [2021-05-21 20:22:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-05-21 20:22:45,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 1566. [2021-05-21 20:22:45,357 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) [2021-05-21 20:22:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 6162 transitions. [2021-05-21 20:22:45,360 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 6162 transitions. Word has length 25 [2021-05-21 20:22:45,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:45,360 INFO L482 AbstractCegarLoop]: Abstraction has 1566 states and 6162 transitions. [2021-05-21 20:22:45,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:45,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 6162 transitions. [2021-05-21 20:22:45,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:45,363 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:45,363 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:45,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-05-21 20:22:45,363 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]=== [2021-05-21 20:22:45,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:45,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2074670211, now seen corresponding path program 108 times [2021-05-21 20:22:45,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:45,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074244033] [2021-05-21 20:22:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:45,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:45,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074244033] [2021-05-21 20:22:45,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074244033] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:45,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:45,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:45,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615252852] [2021-05-21 20:22:45,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:45,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:45,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:45,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:45,444 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) [2021-05-21 20:22:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:45,500 INFO L93 Difference]: Finished difference Result 3428 states and 12676 transitions. [2021-05-21 20:22:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:45,501 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 [2021-05-21 20:22:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:45,507 INFO L225 Difference]: With dead ends: 3428 [2021-05-21 20:22:45,507 INFO L226 Difference]: Without dead ends: 3121 [2021-05-21 20:22:45,507 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 [2021-05-21 20:22:45,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2021-05-21 20:22:45,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1481. [2021-05-21 20:22:45,547 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) [2021-05-21 20:22:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5879 transitions. [2021-05-21 20:22:45,549 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5879 transitions. Word has length 25 [2021-05-21 20:22:45,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:45,549 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 5879 transitions. [2021-05-21 20:22:45,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5879 transitions. [2021-05-21 20:22:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:45,551 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:45,551 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:45,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-05-21 20:22:45,552 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]=== [2021-05-21 20:22:45,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:45,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1982116581, now seen corresponding path program 109 times [2021-05-21 20:22:45,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:45,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681607290] [2021-05-21 20:22:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:45,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:45,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:45,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681607290] [2021-05-21 20:22:45,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681607290] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:45,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:45,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:45,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834913065] [2021-05-21 20:22:45,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:45,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:45,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:45,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:45,634 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) [2021-05-21 20:22:45,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:45,699 INFO L93 Difference]: Finished difference Result 3323 states and 12372 transitions. [2021-05-21 20:22:45,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:45,699 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 [2021-05-21 20:22:45,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:45,705 INFO L225 Difference]: With dead ends: 3323 [2021-05-21 20:22:45,705 INFO L226 Difference]: Without dead ends: 3134 [2021-05-21 20:22:45,706 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 [2021-05-21 20:22:45,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-05-21 20:22:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 1539. [2021-05-21 20:22:45,744 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) [2021-05-21 20:22:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 6096 transitions. [2021-05-21 20:22:45,747 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 6096 transitions. Word has length 25 [2021-05-21 20:22:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:45,747 INFO L482 AbstractCegarLoop]: Abstraction has 1539 states and 6096 transitions. [2021-05-21 20:22:45,747 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) [2021-05-21 20:22:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 6096 transitions. [2021-05-21 20:22:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:45,749 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:45,749 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] [2021-05-21 20:22:45,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-05-21 20:22:45,750 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]=== [2021-05-21 20:22:45,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:45,750 INFO L82 PathProgramCache]: Analyzing trace with hash -789650149, now seen corresponding path program 110 times [2021-05-21 20:22:45,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:45,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904283709] [2021-05-21 20:22:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:45,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:45,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904283709] [2021-05-21 20:22:45,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904283709] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:45,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:45,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:45,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783228803] [2021-05-21 20:22:45,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:45,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:45,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:45,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:45,826 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) [2021-05-21 20:22:45,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:45,887 INFO L93 Difference]: Finished difference Result 3317 states and 12327 transitions. [2021-05-21 20:22:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:45,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:45,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:45,893 INFO L225 Difference]: With dead ends: 3317 [2021-05-21 20:22:45,893 INFO L226 Difference]: Without dead ends: 3106 [2021-05-21 20:22:45,893 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 [2021-05-21 20:22:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2021-05-21 20:22:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 1511. [2021-05-21 20:22:45,931 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) [2021-05-21 20:22:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 5994 transitions. [2021-05-21 20:22:45,933 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 5994 transitions. Word has length 25 [2021-05-21 20:22:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:45,934 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 5994 transitions. [2021-05-21 20:22:45,934 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) [2021-05-21 20:22:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 5994 transitions. [2021-05-21 20:22:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:45,935 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:45,936 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] [2021-05-21 20:22:45,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-05-21 20:22:45,936 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]=== [2021-05-21 20:22:45,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:45,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1002269693, now seen corresponding path program 111 times [2021-05-21 20:22:45,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:45,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075721026] [2021-05-21 20:22:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:46,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:46,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075721026] [2021-05-21 20:22:46,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075721026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:46,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:46,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:46,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462886032] [2021-05-21 20:22:46,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:46,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:46,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:46,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:46,028 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) [2021-05-21 20:22:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:46,090 INFO L93 Difference]: Finished difference Result 3397 states and 12611 transitions. [2021-05-21 20:22:46,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:46,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:46,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:46,096 INFO L225 Difference]: With dead ends: 3397 [2021-05-21 20:22:46,096 INFO L226 Difference]: Without dead ends: 3208 [2021-05-21 20:22:46,097 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 [2021-05-21 20:22:46,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-05-21 20:22:46,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 1574. [2021-05-21 20:22:46,136 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) [2021-05-21 20:22:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 6201 transitions. [2021-05-21 20:22:46,139 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 6201 transitions. Word has length 25 [2021-05-21 20:22:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:46,139 INFO L482 AbstractCegarLoop]: Abstraction has 1574 states and 6201 transitions. [2021-05-21 20:22:46,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 6201 transitions. [2021-05-21 20:22:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:46,141 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:46,141 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:46,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-05-21 20:22:46,141 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]=== [2021-05-21 20:22:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:46,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1016489243, now seen corresponding path program 112 times [2021-05-21 20:22:46,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:46,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317251206] [2021-05-21 20:22:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:46,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:46,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317251206] [2021-05-21 20:22:46,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317251206] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:46,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:46,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:46,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335982594] [2021-05-21 20:22:46,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:46,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:46,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:46,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:46,220 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) [2021-05-21 20:22:46,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:46,294 INFO L93 Difference]: Finished difference Result 3430 states and 12694 transitions. [2021-05-21 20:22:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:46,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:46,301 INFO L225 Difference]: With dead ends: 3430 [2021-05-21 20:22:46,302 INFO L226 Difference]: Without dead ends: 3145 [2021-05-21 20:22:46,302 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 [2021-05-21 20:22:46,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2021-05-21 20:22:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 1511. [2021-05-21 20:22:46,340 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) [2021-05-21 20:22:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 5964 transitions. [2021-05-21 20:22:46,343 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 5964 transitions. Word has length 25 [2021-05-21 20:22:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:46,343 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 5964 transitions. [2021-05-21 20:22:46,343 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) [2021-05-21 20:22:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 5964 transitions. [2021-05-21 20:22:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:46,345 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:46,345 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] [2021-05-21 20:22:46,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-05-21 20:22:46,345 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]=== [2021-05-21 20:22:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:46,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1968717083, now seen corresponding path program 113 times [2021-05-21 20:22:46,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:46,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849346254] [2021-05-21 20:22:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:46,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:46,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849346254] [2021-05-21 20:22:46,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849346254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:46,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:46,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:46,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490375179] [2021-05-21 20:22:46,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:46,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:46,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:46,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:46,432 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) [2021-05-21 20:22:46,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:46,501 INFO L93 Difference]: Finished difference Result 3366 states and 12489 transitions. [2021-05-21 20:22:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:46,502 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 [2021-05-21 20:22:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:46,508 INFO L225 Difference]: With dead ends: 3366 [2021-05-21 20:22:46,508 INFO L226 Difference]: Without dead ends: 3183 [2021-05-21 20:22:46,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:46,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2021-05-21 20:22:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 1555. [2021-05-21 20:22:46,548 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) [2021-05-21 20:22:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6116 transitions. [2021-05-21 20:22:46,551 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6116 transitions. Word has length 25 [2021-05-21 20:22:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:46,551 INFO L482 AbstractCegarLoop]: Abstraction has 1555 states and 6116 transitions. [2021-05-21 20:22:46,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6116 transitions. [2021-05-21 20:22:46,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:46,553 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:46,553 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:46,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-05-21 20:22:46,554 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]=== [2021-05-21 20:22:46,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:46,554 INFO L82 PathProgramCache]: Analyzing trace with hash 899198077, now seen corresponding path program 114 times [2021-05-21 20:22:46,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:46,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507923253] [2021-05-21 20:22:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:46,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:46,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507923253] [2021-05-21 20:22:46,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507923253] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:46,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:46,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:46,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529105064] [2021-05-21 20:22:46,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:46,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:46,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:46,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:46,661 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) [2021-05-21 20:22:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:46,735 INFO L93 Difference]: Finished difference Result 3405 states and 12592 transitions. [2021-05-21 20:22:46,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:46,735 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 [2021-05-21 20:22:46,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:46,742 INFO L225 Difference]: With dead ends: 3405 [2021-05-21 20:22:46,743 INFO L226 Difference]: Without dead ends: 3109 [2021-05-21 20:22:46,743 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:46,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2021-05-21 20:22:46,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 1481. [2021-05-21 20:22:46,781 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) [2021-05-21 20:22:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5864 transitions. [2021-05-21 20:22:46,783 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5864 transitions. Word has length 25 [2021-05-21 20:22:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:46,784 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 5864 transitions. [2021-05-21 20:22:46,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5864 transitions. [2021-05-21 20:22:46,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:46,785 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:46,786 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:46,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-05-21 20:22:46,786 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]=== [2021-05-21 20:22:46,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:46,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1009720071, now seen corresponding path program 115 times [2021-05-21 20:22:46,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:46,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755817033] [2021-05-21 20:22:46,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:46,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:46,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755817033] [2021-05-21 20:22:46,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755817033] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:46,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:46,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:46,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976527562] [2021-05-21 20:22:46,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:46,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:46,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:46,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:46,863 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) [2021-05-21 20:22:46,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:46,935 INFO L93 Difference]: Finished difference Result 3292 states and 12263 transitions. [2021-05-21 20:22:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:46,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:46,941 INFO L225 Difference]: With dead ends: 3292 [2021-05-21 20:22:46,941 INFO L226 Difference]: Without dead ends: 3105 [2021-05-21 20:22:46,941 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 [2021-05-21 20:22:46,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2021-05-21 20:22:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 1531. [2021-05-21 20:22:46,980 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) [2021-05-21 20:22:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 6053 transitions. [2021-05-21 20:22:46,983 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 6053 transitions. Word has length 25 [2021-05-21 20:22:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:46,983 INFO L482 AbstractCegarLoop]: Abstraction has 1531 states and 6053 transitions. [2021-05-21 20:22:46,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:46,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 6053 transitions. [2021-05-21 20:22:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:46,985 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:46,985 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:46,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-05-21 20:22:46,985 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]=== [2021-05-21 20:22:46,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:46,985 INFO L82 PathProgramCache]: Analyzing trace with hash 71342555, now seen corresponding path program 116 times [2021-05-21 20:22:46,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:46,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757457647] [2021-05-21 20:22:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:47,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:47,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757457647] [2021-05-21 20:22:47,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757457647] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:47,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:47,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:47,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395637518] [2021-05-21 20:22:47,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:47,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:47,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:47,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:47,076 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) [2021-05-21 20:22:47,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:47,155 INFO L93 Difference]: Finished difference Result 3288 states and 12223 transitions. [2021-05-21 20:22:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:47,156 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 [2021-05-21 20:22:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:47,163 INFO L225 Difference]: With dead ends: 3288 [2021-05-21 20:22:47,163 INFO L226 Difference]: Without dead ends: 3077 [2021-05-21 20:22:47,163 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 [2021-05-21 20:22:47,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2021-05-21 20:22:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1503. [2021-05-21 20:22:47,216 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) [2021-05-21 20:22:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 5951 transitions. [2021-05-21 20:22:47,219 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 5951 transitions. Word has length 25 [2021-05-21 20:22:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:47,219 INFO L482 AbstractCegarLoop]: Abstraction has 1503 states and 5951 transitions. [2021-05-21 20:22:47,219 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) [2021-05-21 20:22:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 5951 transitions. [2021-05-21 20:22:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:47,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:47,221 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] [2021-05-21 20:22:47,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-05-21 20:22:47,221 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]=== [2021-05-21 20:22:47,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:47,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1974666203, now seen corresponding path program 117 times [2021-05-21 20:22:47,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:47,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155482434] [2021-05-21 20:22:47,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:47,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:47,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155482434] [2021-05-21 20:22:47,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155482434] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:47,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:47,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:47,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788476711] [2021-05-21 20:22:47,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:47,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:47,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:47,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:47,301 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) [2021-05-21 20:22:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:47,367 INFO L93 Difference]: Finished difference Result 3349 states and 12451 transitions. [2021-05-21 20:22:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:47,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:47,373 INFO L225 Difference]: With dead ends: 3349 [2021-05-21 20:22:47,374 INFO L226 Difference]: Without dead ends: 3162 [2021-05-21 20:22:47,374 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 [2021-05-21 20:22:47,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2021-05-21 20:22:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 1549. [2021-05-21 20:22:47,412 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) [2021-05-21 20:22:47,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 6108 transitions. [2021-05-21 20:22:47,415 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 6108 transitions. Word has length 25 [2021-05-21 20:22:47,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:47,415 INFO L482 AbstractCegarLoop]: Abstraction has 1549 states and 6108 transitions. [2021-05-21 20:22:47,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 6108 transitions. [2021-05-21 20:22:47,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:47,417 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:47,417 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] [2021-05-21 20:22:47,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-05-21 20:22:47,418 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]=== [2021-05-21 20:22:47,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:47,418 INFO L82 PathProgramCache]: Analyzing trace with hash 187284443, now seen corresponding path program 118 times [2021-05-21 20:22:47,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:47,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197975005] [2021-05-21 20:22:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:47,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:47,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197975005] [2021-05-21 20:22:47,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197975005] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:47,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:47,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:47,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222714090] [2021-05-21 20:22:47,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:47,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:47,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:47,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:47,506 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) [2021-05-21 20:22:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:47,559 INFO L93 Difference]: Finished difference Result 3384 states and 12540 transitions. [2021-05-21 20:22:47,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:47,560 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 [2021-05-21 20:22:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:47,565 INFO L225 Difference]: With dead ends: 3384 [2021-05-21 20:22:47,565 INFO L226 Difference]: Without dead ends: 3116 [2021-05-21 20:22:47,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-05-21 20:22:47,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 1503. [2021-05-21 20:22:47,603 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) [2021-05-21 20:22:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 5929 transitions. [2021-05-21 20:22:47,606 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 5929 transitions. Word has length 25 [2021-05-21 20:22:47,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:47,606 INFO L482 AbstractCegarLoop]: Abstraction has 1503 states and 5929 transitions. [2021-05-21 20:22:47,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:47,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 5929 transitions. [2021-05-21 20:22:47,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:47,608 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:47,608 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:47,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-05-21 20:22:47,608 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]=== [2021-05-21 20:22:47,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:47,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1932296131, now seen corresponding path program 119 times [2021-05-21 20:22:47,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:47,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40576793] [2021-05-21 20:22:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:47,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:47,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40576793] [2021-05-21 20:22:47,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40576793] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:47,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:47,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:47,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869772874] [2021-05-21 20:22:47,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:47,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:47,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:47,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:47,711 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) [2021-05-21 20:22:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:47,799 INFO L93 Difference]: Finished difference Result 3339 states and 12398 transitions. [2021-05-21 20:22:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:47,805 INFO L225 Difference]: With dead ends: 3339 [2021-05-21 20:22:47,805 INFO L226 Difference]: Without dead ends: 3156 [2021-05-21 20:22:47,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:47,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2021-05-21 20:22:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1547. [2021-05-21 20:22:47,845 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) [2021-05-21 20:22:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 6081 transitions. [2021-05-21 20:22:47,848 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 6081 transitions. Word has length 25 [2021-05-21 20:22:47,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:47,848 INFO L482 AbstractCegarLoop]: Abstraction has 1547 states and 6081 transitions. [2021-05-21 20:22:47,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 6081 transitions. [2021-05-21 20:22:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:47,850 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:47,850 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:47,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-05-21 20:22:47,850 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]=== [2021-05-21 20:22:47,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:47,850 INFO L82 PathProgramCache]: Analyzing trace with hash -727646949, now seen corresponding path program 120 times [2021-05-21 20:22:47,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:47,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536438221] [2021-05-21 20:22:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:47,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:47,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536438221] [2021-05-21 20:22:47,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536438221] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:47,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:47,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:47,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206451073] [2021-05-21 20:22:47,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:47,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:47,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:47,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:47,944 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) [2021-05-21 20:22:48,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:48,007 INFO L93 Difference]: Finished difference Result 3378 states and 12501 transitions. [2021-05-21 20:22:48,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:48,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:48,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:48,013 INFO L225 Difference]: With dead ends: 3378 [2021-05-21 20:22:48,014 INFO L226 Difference]: Without dead ends: 3057 [2021-05-21 20:22:48,014 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 [2021-05-21 20:22:48,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-05-21 20:22:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 1448. [2021-05-21 20:22:48,051 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) [2021-05-21 20:22:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5785 transitions. [2021-05-21 20:22:48,054 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5785 transitions. Word has length 25 [2021-05-21 20:22:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:48,054 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5785 transitions. [2021-05-21 20:22:48,054 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) [2021-05-21 20:22:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5785 transitions. [2021-05-21 20:22:48,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:48,056 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:48,056 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] [2021-05-21 20:22:48,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-05-21 20:22:48,056 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]=== [2021-05-21 20:22:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1096271389, now seen corresponding path program 121 times [2021-05-21 20:22:48,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:48,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049832852] [2021-05-21 20:22:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:48,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:48,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049832852] [2021-05-21 20:22:48,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049832852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:48,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:48,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:48,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736348096] [2021-05-21 20:22:48,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:48,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:48,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:48,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:48,165 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) [2021-05-21 20:22:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:48,219 INFO L93 Difference]: Finished difference Result 3141 states and 11643 transitions. [2021-05-21 20:22:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:48,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:48,224 INFO L225 Difference]: With dead ends: 3141 [2021-05-21 20:22:48,225 INFO L226 Difference]: Without dead ends: 2982 [2021-05-21 20:22:48,225 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 [2021-05-21 20:22:48,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2021-05-21 20:22:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1504. [2021-05-21 20:22:48,262 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) [2021-05-21 20:22:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5997 transitions. [2021-05-21 20:22:48,265 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5997 transitions. Word has length 25 [2021-05-21 20:22:48,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:48,265 INFO L482 AbstractCegarLoop]: Abstraction has 1504 states and 5997 transitions. [2021-05-21 20:22:48,265 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) [2021-05-21 20:22:48,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5997 transitions. [2021-05-21 20:22:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:48,267 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:48,267 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:48,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-05-21 20:22:48,267 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]=== [2021-05-21 20:22:48,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:48,267 INFO L82 PathProgramCache]: Analyzing trace with hash 87973405, now seen corresponding path program 122 times [2021-05-21 20:22:48,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:48,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746244659] [2021-05-21 20:22:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:48,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:48,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746244659] [2021-05-21 20:22:48,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746244659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:48,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:48,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:48,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723770612] [2021-05-21 20:22:48,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:48,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:48,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:48,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:48,384 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) [2021-05-21 20:22:48,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:48,435 INFO L93 Difference]: Finished difference Result 3204 states and 11850 transitions. [2021-05-21 20:22:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:48,435 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 [2021-05-21 20:22:48,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:48,440 INFO L225 Difference]: With dead ends: 3204 [2021-05-21 20:22:48,441 INFO L226 Difference]: Without dead ends: 2950 [2021-05-21 20:22:48,441 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 [2021-05-21 20:22:48,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-05-21 20:22:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1472. [2021-05-21 20:22:48,478 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) [2021-05-21 20:22:48,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5869 transitions. [2021-05-21 20:22:48,481 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5869 transitions. Word has length 25 [2021-05-21 20:22:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:48,481 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5869 transitions. [2021-05-21 20:22:48,481 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) [2021-05-21 20:22:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5869 transitions. [2021-05-21 20:22:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:48,483 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:48,483 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] [2021-05-21 20:22:48,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-05-21 20:22:48,483 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]=== [2021-05-21 20:22:48,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:48,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1134886073, now seen corresponding path program 123 times [2021-05-21 20:22:48,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:48,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844416608] [2021-05-21 20:22:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:48,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:48,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844416608] [2021-05-21 20:22:48,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844416608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:48,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:48,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:48,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771735387] [2021-05-21 20:22:48,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:48,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:48,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:48,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:48,583 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) [2021-05-21 20:22:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:48,632 INFO L93 Difference]: Finished difference Result 3092 states and 11449 transitions. [2021-05-21 20:22:48,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:48,633 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 [2021-05-21 20:22:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:48,638 INFO L225 Difference]: With dead ends: 3092 [2021-05-21 20:22:48,639 INFO L226 Difference]: Without dead ends: 2933 [2021-05-21 20:22:48,639 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 [2021-05-21 20:22:48,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2021-05-21 20:22:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1488. [2021-05-21 20:22:48,690 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) [2021-05-21 20:22:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5917 transitions. [2021-05-21 20:22:48,694 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5917 transitions. Word has length 25 [2021-05-21 20:22:48,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:48,694 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5917 transitions. [2021-05-21 20:22:48,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5917 transitions. [2021-05-21 20:22:48,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:48,696 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:48,696 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:48,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-05-21 20:22:48,696 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]=== [2021-05-21 20:22:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:48,697 INFO L82 PathProgramCache]: Analyzing trace with hash -455048677, now seen corresponding path program 124 times [2021-05-21 20:22:48,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:48,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987502406] [2021-05-21 20:22:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:48,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:48,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987502406] [2021-05-21 20:22:48,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987502406] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:48,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:48,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:48,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050366505] [2021-05-21 20:22:48,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:48,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:48,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:48,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:48,793 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) [2021-05-21 20:22:48,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:48,856 INFO L93 Difference]: Finished difference Result 3122 states and 11542 transitions. [2021-05-21 20:22:48,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:48,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:48,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:48,862 INFO L225 Difference]: With dead ends: 3122 [2021-05-21 20:22:48,862 INFO L226 Difference]: Without dead ends: 2917 [2021-05-21 20:22:48,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:48,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2021-05-21 20:22:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1472. [2021-05-21 20:22:48,900 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) [2021-05-21 20:22:48,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5861 transitions. [2021-05-21 20:22:48,903 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5861 transitions. Word has length 25 [2021-05-21 20:22:48,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:48,903 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5861 transitions. [2021-05-21 20:22:48,903 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) [2021-05-21 20:22:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5861 transitions. [2021-05-21 20:22:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:48,905 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:48,905 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] [2021-05-21 20:22:48,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-05-21 20:22:48,906 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]=== [2021-05-21 20:22:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:48,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1093212163, now seen corresponding path program 125 times [2021-05-21 20:22:48,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:48,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939347453] [2021-05-21 20:22:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:48,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:48,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939347453] [2021-05-21 20:22:48,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939347453] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:48,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:48,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:48,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637671126] [2021-05-21 20:22:48,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:48,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:48,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:48,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:48,993 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) [2021-05-21 20:22:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:49,054 INFO L93 Difference]: Finished difference Result 3232 states and 11947 transitions. [2021-05-21 20:22:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:49,054 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 [2021-05-21 20:22:49,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:49,059 INFO L225 Difference]: With dead ends: 3232 [2021-05-21 20:22:49,059 INFO L226 Difference]: Without dead ends: 3043 [2021-05-21 20:22:49,059 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 [2021-05-21 20:22:49,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2021-05-21 20:22:49,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 1535. [2021-05-21 20:22:49,097 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) [2021-05-21 20:22:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6068 transitions. [2021-05-21 20:22:49,099 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6068 transitions. Word has length 25 [2021-05-21 20:22:49,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:49,100 INFO L482 AbstractCegarLoop]: Abstraction has 1535 states and 6068 transitions. [2021-05-21 20:22:49,100 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) [2021-05-21 20:22:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6068 transitions. [2021-05-21 20:22:49,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:49,101 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:49,102 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] [2021-05-21 20:22:49,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-05-21 20:22:49,102 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]=== [2021-05-21 20:22:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:49,102 INFO L82 PathProgramCache]: Analyzing trace with hash -795159205, now seen corresponding path program 126 times [2021-05-21 20:22:49,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:49,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108728349] [2021-05-21 20:22:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:49,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:49,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108728349] [2021-05-21 20:22:49,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108728349] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:49,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:49,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:49,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096272337] [2021-05-21 20:22:49,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:49,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:49,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:49,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:49,188 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) [2021-05-21 20:22:49,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:49,237 INFO L93 Difference]: Finished difference Result 3265 states and 12030 transitions. [2021-05-21 20:22:49,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:49,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:49,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:49,243 INFO L225 Difference]: With dead ends: 3265 [2021-05-21 20:22:49,243 INFO L226 Difference]: Without dead ends: 2956 [2021-05-21 20:22:49,243 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 [2021-05-21 20:22:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-05-21 20:22:49,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1448. [2021-05-21 20:22:49,279 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) [2021-05-21 20:22:49,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5773 transitions. [2021-05-21 20:22:49,282 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5773 transitions. Word has length 25 [2021-05-21 20:22:49,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:49,282 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5773 transitions. [2021-05-21 20:22:49,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:49,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5773 transitions. [2021-05-21 20:22:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:49,284 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:49,284 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:49,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-05-21 20:22:49,284 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]=== [2021-05-21 20:22:49,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:49,284 INFO L82 PathProgramCache]: Analyzing trace with hash 693784637, now seen corresponding path program 127 times [2021-05-21 20:22:49,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:49,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961642499] [2021-05-21 20:22:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:49,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:49,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:49,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961642499] [2021-05-21 20:22:49,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961642499] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:49,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:49,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:49,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957957277] [2021-05-21 20:22:49,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:49,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:49,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:49,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:49,382 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) [2021-05-21 20:22:49,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:49,432 INFO L93 Difference]: Finished difference Result 3114 states and 11547 transitions. [2021-05-21 20:22:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:49,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:49,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:49,437 INFO L225 Difference]: With dead ends: 3114 [2021-05-21 20:22:49,437 INFO L226 Difference]: Without dead ends: 2955 [2021-05-21 20:22:49,438 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 [2021-05-21 20:22:49,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-05-21 20:22:49,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1496. [2021-05-21 20:22:49,474 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) [2021-05-21 20:22:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5957 transitions. [2021-05-21 20:22:49,477 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5957 transitions. Word has length 25 [2021-05-21 20:22:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:49,477 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5957 transitions. [2021-05-21 20:22:49,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:49,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5957 transitions. [2021-05-21 20:22:49,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:49,479 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:49,479 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:49,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-05-21 20:22:49,479 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]=== [2021-05-21 20:22:49,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:49,479 INFO L82 PathProgramCache]: Analyzing trace with hash -314513347, now seen corresponding path program 128 times [2021-05-21 20:22:49,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:49,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499630181] [2021-05-21 20:22:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:49,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:49,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499630181] [2021-05-21 20:22:49,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499630181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:49,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:49,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:49,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683860833] [2021-05-21 20:22:49,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:49,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:49,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:49,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:49,575 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) [2021-05-21 20:22:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:49,626 INFO L93 Difference]: Finished difference Result 3177 states and 11754 transitions. [2021-05-21 20:22:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:49,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:49,631 INFO L225 Difference]: With dead ends: 3177 [2021-05-21 20:22:49,632 INFO L226 Difference]: Without dead ends: 2923 [2021-05-21 20:22:49,632 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 [2021-05-21 20:22:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2021-05-21 20:22:49,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1464. [2021-05-21 20:22:49,668 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) [2021-05-21 20:22:49,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5829 transitions. [2021-05-21 20:22:49,671 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5829 transitions. Word has length 25 [2021-05-21 20:22:49,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:49,671 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5829 transitions. [2021-05-21 20:22:49,671 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) [2021-05-21 20:22:49,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5829 transitions. [2021-05-21 20:22:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:49,673 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:49,673 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:49,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-05-21 20:22:49,673 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]=== [2021-05-21 20:22:49,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:49,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1682818143, now seen corresponding path program 129 times [2021-05-21 20:22:49,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:49,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992193168] [2021-05-21 20:22:49,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:49,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:49,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992193168] [2021-05-21 20:22:49,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992193168] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:49,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:49,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:49,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202181706] [2021-05-21 20:22:49,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:49,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:49,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:49,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:49,776 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) [2021-05-21 20:22:49,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:49,844 INFO L93 Difference]: Finished difference Result 3063 states and 11348 transitions. [2021-05-21 20:22:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:49,844 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 [2021-05-21 20:22:49,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:49,849 INFO L225 Difference]: With dead ends: 3063 [2021-05-21 20:22:49,849 INFO L226 Difference]: Without dead ends: 2904 [2021-05-21 20:22:49,850 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 [2021-05-21 20:22:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2021-05-21 20:22:49,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1480. [2021-05-21 20:22:49,886 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) [2021-05-21 20:22:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 5877 transitions. [2021-05-21 20:22:49,888 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 5877 transitions. Word has length 25 [2021-05-21 20:22:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:49,889 INFO L482 AbstractCegarLoop]: Abstraction has 1480 states and 5877 transitions. [2021-05-21 20:22:49,889 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) [2021-05-21 20:22:49,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 5877 transitions. [2021-05-21 20:22:49,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:49,890 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:49,891 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:49,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-05-21 20:22:49,891 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]=== [2021-05-21 20:22:49,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:49,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1603851169, now seen corresponding path program 130 times [2021-05-21 20:22:49,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:49,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46935233] [2021-05-21 20:22:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:49,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:49,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46935233] [2021-05-21 20:22:49,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46935233] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:49,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:49,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:49,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159738252] [2021-05-21 20:22:49,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:49,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:49,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:49,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:49,992 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) [2021-05-21 20:22:50,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:50,055 INFO L93 Difference]: Finished difference Result 3091 states and 11436 transitions. [2021-05-21 20:22:50,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:50,056 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 [2021-05-21 20:22:50,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:50,061 INFO L225 Difference]: With dead ends: 3091 [2021-05-21 20:22:50,061 INFO L226 Difference]: Without dead ends: 2888 [2021-05-21 20:22:50,061 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 [2021-05-21 20:22:50,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2021-05-21 20:22:50,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1464. [2021-05-21 20:22:50,097 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) [2021-05-21 20:22:50,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5821 transitions. [2021-05-21 20:22:50,099 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5821 transitions. Word has length 25 [2021-05-21 20:22:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:50,100 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5821 transitions. [2021-05-21 20:22:50,100 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) [2021-05-21 20:22:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5821 transitions. [2021-05-21 20:22:50,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:50,101 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:50,102 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] [2021-05-21 20:22:50,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-05-21 20:22:50,102 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]=== [2021-05-21 20:22:50,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:50,102 INFO L82 PathProgramCache]: Analyzing trace with hash 84395103, now seen corresponding path program 131 times [2021-05-21 20:22:50,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:50,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309165712] [2021-05-21 20:22:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:50,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:50,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309165712] [2021-05-21 20:22:50,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309165712] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:50,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:50,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:50,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615273478] [2021-05-21 20:22:50,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:50,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:50,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:50,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:50,188 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) [2021-05-21 20:22:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:50,248 INFO L93 Difference]: Finished difference Result 3184 states and 11790 transitions. [2021-05-21 20:22:50,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:50,248 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 [2021-05-21 20:22:50,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:50,254 INFO L225 Difference]: With dead ends: 3184 [2021-05-21 20:22:50,254 INFO L226 Difference]: Without dead ends: 2997 [2021-05-21 20:22:50,254 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 [2021-05-21 20:22:50,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2021-05-21 20:22:50,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1510. [2021-05-21 20:22:50,292 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) [2021-05-21 20:22:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 5978 transitions. [2021-05-21 20:22:50,295 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 5978 transitions. Word has length 25 [2021-05-21 20:22:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:50,295 INFO L482 AbstractCegarLoop]: Abstraction has 1510 states and 5978 transitions. [2021-05-21 20:22:50,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 5978 transitions. [2021-05-21 20:22:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:50,297 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:50,297 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] [2021-05-21 20:22:50,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-05-21 20:22:50,297 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]=== [2021-05-21 20:22:50,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:50,297 INFO L82 PathProgramCache]: Analyzing trace with hash -268744387, now seen corresponding path program 132 times [2021-05-21 20:22:50,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:50,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779098023] [2021-05-21 20:22:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:50,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:50,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779098023] [2021-05-21 20:22:50,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779098023] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:50,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:50,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:50,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474886727] [2021-05-21 20:22:50,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:50,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:50,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:50,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:50,392 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) [2021-05-21 20:22:50,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:50,461 INFO L93 Difference]: Finished difference Result 3219 states and 11879 transitions. [2021-05-21 20:22:50,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:50,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:50,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:50,466 INFO L225 Difference]: With dead ends: 3219 [2021-05-21 20:22:50,467 INFO L226 Difference]: Without dead ends: 2935 [2021-05-21 20:22:50,467 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 [2021-05-21 20:22:50,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2021-05-21 20:22:50,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1448. [2021-05-21 20:22:50,504 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) [2021-05-21 20:22:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5765 transitions. [2021-05-21 20:22:50,507 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5765 transitions. Word has length 25 [2021-05-21 20:22:50,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:50,507 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5765 transitions. [2021-05-21 20:22:50,507 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) [2021-05-21 20:22:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5765 transitions. [2021-05-21 20:22:50,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:50,509 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:50,509 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] [2021-05-21 20:22:50,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-05-21 20:22:50,509 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]=== [2021-05-21 20:22:50,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:50,509 INFO L82 PathProgramCache]: Analyzing trace with hash -944238823, now seen corresponding path program 133 times [2021-05-21 20:22:50,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:50,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544128822] [2021-05-21 20:22:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:50,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:50,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544128822] [2021-05-21 20:22:50,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544128822] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:50,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:50,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:50,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520705178] [2021-05-21 20:22:50,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:50,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:50,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:50,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:50,605 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) [2021-05-21 20:22:50,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:50,666 INFO L93 Difference]: Finished difference Result 2992 states and 11083 transitions. [2021-05-21 20:22:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:50,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:50,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:50,671 INFO L225 Difference]: With dead ends: 2992 [2021-05-21 20:22:50,671 INFO L226 Difference]: Without dead ends: 2833 [2021-05-21 20:22:50,672 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 [2021-05-21 20:22:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2021-05-21 20:22:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 1472. [2021-05-21 20:22:50,707 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) [2021-05-21 20:22:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5849 transitions. [2021-05-21 20:22:50,710 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5849 transitions. Word has length 25 [2021-05-21 20:22:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:50,710 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5849 transitions. [2021-05-21 20:22:50,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5849 transitions. [2021-05-21 20:22:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:50,712 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:50,712 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:50,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-05-21 20:22:50,712 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]=== [2021-05-21 20:22:50,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:50,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1760793723, now seen corresponding path program 134 times [2021-05-21 20:22:50,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:50,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731058336] [2021-05-21 20:22:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:50,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:50,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731058336] [2021-05-21 20:22:50,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731058336] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:50,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:50,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:50,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421211840] [2021-05-21 20:22:50,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:50,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:50,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:50,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:50,811 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) [2021-05-21 20:22:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:50,877 INFO L93 Difference]: Finished difference Result 3022 states and 11176 transitions. [2021-05-21 20:22:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:50,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:50,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:50,882 INFO L225 Difference]: With dead ends: 3022 [2021-05-21 20:22:50,882 INFO L226 Difference]: Without dead ends: 2817 [2021-05-21 20:22:50,882 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 [2021-05-21 20:22:50,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-05-21 20:22:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 1456. [2021-05-21 20:22:50,918 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) [2021-05-21 20:22:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5793 transitions. [2021-05-21 20:22:50,921 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5793 transitions. Word has length 25 [2021-05-21 20:22:50,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:50,921 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5793 transitions. [2021-05-21 20:22:50,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5793 transitions. [2021-05-21 20:22:50,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:50,923 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:50,923 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:50,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-05-21 20:22:50,923 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]=== [2021-05-21 20:22:50,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:50,923 INFO L82 PathProgramCache]: Analyzing trace with hash 136823803, now seen corresponding path program 135 times [2021-05-21 20:22:50,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:50,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736931873] [2021-05-21 20:22:50,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:51,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:51,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736931873] [2021-05-21 20:22:51,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736931873] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:51,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:51,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:51,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193732333] [2021-05-21 20:22:51,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:51,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:51,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:51,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:51,036 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) [2021-05-21 20:22:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:51,091 INFO L93 Difference]: Finished difference Result 2990 states and 11070 transitions. [2021-05-21 20:22:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:51,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:51,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:51,096 INFO L225 Difference]: With dead ends: 2990 [2021-05-21 20:22:51,096 INFO L226 Difference]: Without dead ends: 2831 [2021-05-21 20:22:51,097 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 [2021-05-21 20:22:51,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2021-05-21 20:22:51,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1472. [2021-05-21 20:22:51,134 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) [2021-05-21 20:22:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5841 transitions. [2021-05-21 20:22:51,136 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5841 transitions. Word has length 25 [2021-05-21 20:22:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:51,137 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5841 transitions. [2021-05-21 20:22:51,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:51,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5841 transitions. [2021-05-21 20:22:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:51,138 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:51,138 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] [2021-05-21 20:22:51,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-05-21 20:22:51,139 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]=== [2021-05-21 20:22:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:51,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1145121787, now seen corresponding path program 136 times [2021-05-21 20:22:51,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:51,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976032872] [2021-05-21 20:22:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:51,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:51,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976032872] [2021-05-21 20:22:51,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976032872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:51,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:51,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:51,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112316198] [2021-05-21 20:22:51,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:51,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:51,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:51,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:51,241 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) [2021-05-21 20:22:51,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:51,305 INFO L93 Difference]: Finished difference Result 3018 states and 11158 transitions. [2021-05-21 20:22:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:51,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:51,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:51,310 INFO L225 Difference]: With dead ends: 3018 [2021-05-21 20:22:51,310 INFO L226 Difference]: Without dead ends: 2815 [2021-05-21 20:22:51,311 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 [2021-05-21 20:22:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2021-05-21 20:22:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 1456. [2021-05-21 20:22:51,346 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) [2021-05-21 20:22:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5785 transitions. [2021-05-21 20:22:51,349 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5785 transitions. Word has length 25 [2021-05-21 20:22:51,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:51,349 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5785 transitions. [2021-05-21 20:22:51,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:51,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5785 transitions. [2021-05-21 20:22:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:51,351 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:51,351 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:51,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-05-21 20:22:51,351 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]=== [2021-05-21 20:22:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:51,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1553985757, now seen corresponding path program 137 times [2021-05-21 20:22:51,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:51,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268948360] [2021-05-21 20:22:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:51,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:51,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268948360] [2021-05-21 20:22:51,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268948360] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:51,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:51,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:51,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790007754] [2021-05-21 20:22:51,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:51,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:51,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:51,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:51,450 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) [2021-05-21 20:22:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:51,524 INFO L93 Difference]: Finished difference Result 3064 states and 11339 transitions. [2021-05-21 20:22:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:51,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:51,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:51,529 INFO L225 Difference]: With dead ends: 3064 [2021-05-21 20:22:51,529 INFO L226 Difference]: Without dead ends: 2875 [2021-05-21 20:22:51,530 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:51,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-05-21 20:22:51,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1486. [2021-05-21 20:22:51,565 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) [2021-05-21 20:22:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5878 transitions. [2021-05-21 20:22:51,568 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5878 transitions. Word has length 25 [2021-05-21 20:22:51,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:51,568 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5878 transitions. [2021-05-21 20:22:51,568 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) [2021-05-21 20:22:51,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5878 transitions. [2021-05-21 20:22:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:51,570 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:51,570 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] [2021-05-21 20:22:51,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-05-21 20:22:51,570 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]=== [2021-05-21 20:22:51,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:51,570 INFO L82 PathProgramCache]: Analyzing trace with hash -489351237, now seen corresponding path program 138 times [2021-05-21 20:22:51,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:51,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619858129] [2021-05-21 20:22:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:51,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:51,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619858129] [2021-05-21 20:22:51,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619858129] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:51,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:51,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:51,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124869852] [2021-05-21 20:22:51,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:51,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:51,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:51,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:51,661 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) [2021-05-21 20:22:51,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:51,724 INFO L93 Difference]: Finished difference Result 3062 states and 11304 transitions. [2021-05-21 20:22:51,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:51,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:51,729 INFO L225 Difference]: With dead ends: 3062 [2021-05-21 20:22:51,729 INFO L226 Difference]: Without dead ends: 2837 [2021-05-21 20:22:51,730 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 [2021-05-21 20:22:51,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2021-05-21 20:22:51,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1448. [2021-05-21 20:22:51,766 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) [2021-05-21 20:22:51,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5761 transitions. [2021-05-21 20:22:51,770 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5761 transitions. Word has length 25 [2021-05-21 20:22:51,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:51,785 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5761 transitions. [2021-05-21 20:22:51,785 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) [2021-05-21 20:22:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5761 transitions. [2021-05-21 20:22:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:51,787 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:51,787 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] [2021-05-21 20:22:51,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-05-21 20:22:51,788 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]=== [2021-05-21 20:22:51,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:51,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1835768257, now seen corresponding path program 139 times [2021-05-21 20:22:51,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:51,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629211338] [2021-05-21 20:22:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:51,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:51,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629211338] [2021-05-21 20:22:51,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629211338] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:51,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:51,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:51,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387846487] [2021-05-21 20:22:51,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:51,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:51,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:51,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:51,874 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) [2021-05-21 20:22:51,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:51,939 INFO L93 Difference]: Finished difference Result 3235 states and 11988 transitions. [2021-05-21 20:22:51,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:51,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:51,945 INFO L225 Difference]: With dead ends: 3235 [2021-05-21 20:22:51,945 INFO L226 Difference]: Without dead ends: 3046 [2021-05-21 20:22:51,945 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 [2021-05-21 20:22:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2021-05-21 20:22:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 1517. [2021-05-21 20:22:51,983 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) [2021-05-21 20:22:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 6007 transitions. [2021-05-21 20:22:51,986 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 6007 transitions. Word has length 25 [2021-05-21 20:22:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:51,986 INFO L482 AbstractCegarLoop]: Abstraction has 1517 states and 6007 transitions. [2021-05-21 20:22:51,986 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) [2021-05-21 20:22:51,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 6007 transitions. [2021-05-21 20:22:51,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:51,988 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:51,988 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] [2021-05-21 20:22:51,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-05-21 20:22:51,988 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]=== [2021-05-21 20:22:51,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:51,988 INFO L82 PathProgramCache]: Analyzing trace with hash 415862045, now seen corresponding path program 140 times [2021-05-21 20:22:51,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:51,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703767063] [2021-05-21 20:22:51,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:52,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:52,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703767063] [2021-05-21 20:22:52,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703767063] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:52,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:52,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:52,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413622917] [2021-05-21 20:22:52,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:52,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:52,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:52,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:52,078 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) [2021-05-21 20:22:52,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:52,146 INFO L93 Difference]: Finished difference Result 3233 states and 11953 transitions. [2021-05-21 20:22:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:52,146 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 [2021-05-21 20:22:52,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:52,153 INFO L225 Difference]: With dead ends: 3233 [2021-05-21 20:22:52,153 INFO L226 Difference]: Without dead ends: 3016 [2021-05-21 20:22:52,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:52,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-05-21 20:22:52,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1487. [2021-05-21 20:22:52,198 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) [2021-05-21 20:22:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 5899 transitions. [2021-05-21 20:22:52,201 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 5899 transitions. Word has length 25 [2021-05-21 20:22:52,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:52,201 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 5899 transitions. [2021-05-21 20:22:52,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 5899 transitions. [2021-05-21 20:22:52,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:52,203 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:52,203 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:52,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-05-21 20:22:52,203 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]=== [2021-05-21 20:22:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:52,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1900401763, now seen corresponding path program 141 times [2021-05-21 20:22:52,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:52,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962186950] [2021-05-21 20:22:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:52,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:52,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962186950] [2021-05-21 20:22:52,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962186950] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:52,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:52,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:52,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985122345] [2021-05-21 20:22:52,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:52,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:52,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:52,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:52,284 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) [2021-05-21 20:22:52,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:52,359 INFO L93 Difference]: Finished difference Result 3303 states and 12207 transitions. [2021-05-21 20:22:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:52,360 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:52,367 INFO L225 Difference]: With dead ends: 3303 [2021-05-21 20:22:52,367 INFO L226 Difference]: Without dead ends: 3114 [2021-05-21 20:22:52,367 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 [2021-05-21 20:22:52,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-05-21 20:22:52,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 1550. [2021-05-21 20:22:52,422 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) [2021-05-21 20:22:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 6106 transitions. [2021-05-21 20:22:52,426 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 6106 transitions. Word has length 25 [2021-05-21 20:22:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:52,426 INFO L482 AbstractCegarLoop]: Abstraction has 1550 states and 6106 transitions. [2021-05-21 20:22:52,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:52,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 6106 transitions. [2021-05-21 20:22:52,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:52,429 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:52,429 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:52,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-05-21 20:22:52,429 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]=== [2021-05-21 20:22:52,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:52,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1838777245, now seen corresponding path program 142 times [2021-05-21 20:22:52,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:52,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758063817] [2021-05-21 20:22:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:52,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:52,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758063817] [2021-05-21 20:22:52,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758063817] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:52,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:52,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:52,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408827696] [2021-05-21 20:22:52,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:52,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:52,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:52,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:52,528 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) [2021-05-21 20:22:52,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:52,591 INFO L93 Difference]: Finished difference Result 3336 states and 12290 transitions. [2021-05-21 20:22:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:52,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:52,598 INFO L225 Difference]: With dead ends: 3336 [2021-05-21 20:22:52,599 INFO L226 Difference]: Without dead ends: 3051 [2021-05-21 20:22:52,599 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 [2021-05-21 20:22:52,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-05-21 20:22:52,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 1487. [2021-05-21 20:22:52,652 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) [2021-05-21 20:22:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 5868 transitions. [2021-05-21 20:22:52,656 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 5868 transitions. Word has length 25 [2021-05-21 20:22:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:52,656 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 5868 transitions. [2021-05-21 20:22:52,656 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) [2021-05-21 20:22:52,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 5868 transitions. [2021-05-21 20:22:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:52,659 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:52,659 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] [2021-05-21 20:22:52,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-05-21 20:22:52,659 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]=== [2021-05-21 20:22:52,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:52,659 INFO L82 PathProgramCache]: Analyzing trace with hash -918054149, now seen corresponding path program 143 times [2021-05-21 20:22:52,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:52,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951930784] [2021-05-21 20:22:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:52,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:52,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951930784] [2021-05-21 20:22:52,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951930784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:52,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:52,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:52,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444516324] [2021-05-21 20:22:52,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:52,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:52,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:52,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:52,790 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) [2021-05-21 20:22:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:52,871 INFO L93 Difference]: Finished difference Result 3282 states and 12115 transitions. [2021-05-21 20:22:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:52,871 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 [2021-05-21 20:22:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:52,878 INFO L225 Difference]: With dead ends: 3282 [2021-05-21 20:22:52,878 INFO L226 Difference]: Without dead ends: 3095 [2021-05-21 20:22:52,878 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 148.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:52,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2021-05-21 20:22:52,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 1533. [2021-05-21 20:22:52,931 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) [2021-05-21 20:22:52,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 6025 transitions. [2021-05-21 20:22:52,935 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 6025 transitions. Word has length 25 [2021-05-21 20:22:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:52,935 INFO L482 AbstractCegarLoop]: Abstraction has 1533 states and 6025 transitions. [2021-05-21 20:22:52,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 6025 transitions. [2021-05-21 20:22:52,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:52,938 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:52,938 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] [2021-05-21 20:22:52,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-05-21 20:22:52,938 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]=== [2021-05-21 20:22:52,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:52,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1019523549, now seen corresponding path program 144 times [2021-05-21 20:22:52,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:52,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502264327] [2021-05-21 20:22:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:53,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:53,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502264327] [2021-05-21 20:22:53,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502264327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:53,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:53,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:53,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981054932] [2021-05-21 20:22:53,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:53,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:53,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:53,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:53,040 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) [2021-05-21 20:22:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:53,111 INFO L93 Difference]: Finished difference Result 3317 states and 12204 transitions. [2021-05-21 20:22:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:53,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:53,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:53,119 INFO L225 Difference]: With dead ends: 3317 [2021-05-21 20:22:53,119 INFO L226 Difference]: Without dead ends: 2994 [2021-05-21 20:22:53,119 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 [2021-05-21 20:22:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-05-21 20:22:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1432. [2021-05-21 20:22:53,171 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) [2021-05-21 20:22:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5709 transitions. [2021-05-21 20:22:53,175 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5709 transitions. Word has length 25 [2021-05-21 20:22:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:53,175 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5709 transitions. [2021-05-21 20:22:53,175 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) [2021-05-21 20:22:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5709 transitions. [2021-05-21 20:22:53,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:53,177 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:53,177 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] [2021-05-21 20:22:53,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-05-21 20:22:53,177 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]=== [2021-05-21 20:22:53,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:53,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1287212865, now seen corresponding path program 145 times [2021-05-21 20:22:53,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:53,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421085052] [2021-05-21 20:22:53,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:53,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:53,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421085052] [2021-05-21 20:22:53,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421085052] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:53,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:53,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:53,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688534402] [2021-05-21 20:22:53,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:53,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:53,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:53,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:53,289 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) [2021-05-21 20:22:53,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:53,356 INFO L93 Difference]: Finished difference Result 3078 states and 11404 transitions. [2021-05-21 20:22:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:53,356 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 [2021-05-21 20:22:53,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:53,361 INFO L225 Difference]: With dead ends: 3078 [2021-05-21 20:22:53,361 INFO L226 Difference]: Without dead ends: 2919 [2021-05-21 20:22:53,361 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 [2021-05-21 20:22:53,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2021-05-21 20:22:53,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1500. [2021-05-21 20:22:53,398 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) [2021-05-21 20:22:53,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5977 transitions. [2021-05-21 20:22:53,401 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5977 transitions. Word has length 25 [2021-05-21 20:22:53,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:53,401 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5977 transitions. [2021-05-21 20:22:53,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:53,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5977 transitions. [2021-05-21 20:22:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:53,403 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:53,403 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:53,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-05-21 20:22:53,403 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]=== [2021-05-21 20:22:53,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:53,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1999456447, now seen corresponding path program 146 times [2021-05-21 20:22:53,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:53,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550124982] [2021-05-21 20:22:53,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:53,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:53,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550124982] [2021-05-21 20:22:53,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550124982] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:53,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:53,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:53,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798985303] [2021-05-21 20:22:53,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:53,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:53,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:53,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:53,497 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) [2021-05-21 20:22:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:53,553 INFO L93 Difference]: Finished difference Result 3141 states and 11611 transitions. [2021-05-21 20:22:53,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:53,553 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 [2021-05-21 20:22:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:53,558 INFO L225 Difference]: With dead ends: 3141 [2021-05-21 20:22:53,559 INFO L226 Difference]: Without dead ends: 2887 [2021-05-21 20:22:53,559 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 [2021-05-21 20:22:53,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2021-05-21 20:22:53,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1468. [2021-05-21 20:22:53,595 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) [2021-05-21 20:22:53,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5849 transitions. [2021-05-21 20:22:53,597 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5849 transitions. Word has length 25 [2021-05-21 20:22:53,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:53,598 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5849 transitions. [2021-05-21 20:22:53,598 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) [2021-05-21 20:22:53,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5849 transitions. [2021-05-21 20:22:53,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:53,599 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:53,599 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] [2021-05-21 20:22:53,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-05-21 20:22:53,600 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]=== [2021-05-21 20:22:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:53,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1248598181, now seen corresponding path program 147 times [2021-05-21 20:22:53,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:53,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977007613] [2021-05-21 20:22:53,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:53,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:53,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977007613] [2021-05-21 20:22:53,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977007613] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:53,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:53,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:53,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913073920] [2021-05-21 20:22:53,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:53,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:53,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:53,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:53,699 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) [2021-05-21 20:22:53,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:53,752 INFO L93 Difference]: Finished difference Result 3029 states and 11210 transitions. [2021-05-21 20:22:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:53,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:53,757 INFO L225 Difference]: With dead ends: 3029 [2021-05-21 20:22:53,758 INFO L226 Difference]: Without dead ends: 2870 [2021-05-21 20:22:53,758 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:53,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-05-21 20:22:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1484. [2021-05-21 20:22:53,794 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) [2021-05-21 20:22:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5897 transitions. [2021-05-21 20:22:53,796 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5897 transitions. Word has length 25 [2021-05-21 20:22:53,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:53,796 INFO L482 AbstractCegarLoop]: Abstraction has 1484 states and 5897 transitions. [2021-05-21 20:22:53,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:53,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5897 transitions. [2021-05-21 20:22:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:53,798 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:53,798 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:53,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-05-21 20:22:53,799 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]=== [2021-05-21 20:22:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:53,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1456434365, now seen corresponding path program 148 times [2021-05-21 20:22:53,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:53,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601388454] [2021-05-21 20:22:53,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:53,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:53,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601388454] [2021-05-21 20:22:53,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601388454] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:53,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:53,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:53,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976085278] [2021-05-21 20:22:53,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:53,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:53,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:53,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:53,910 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) [2021-05-21 20:22:53,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:53,980 INFO L93 Difference]: Finished difference Result 3059 states and 11303 transitions. [2021-05-21 20:22:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:53,980 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 [2021-05-21 20:22:53,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:53,985 INFO L225 Difference]: With dead ends: 3059 [2021-05-21 20:22:53,985 INFO L226 Difference]: Without dead ends: 2854 [2021-05-21 20:22:53,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-05-21 20:22:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1468. [2021-05-21 20:22:54,022 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) [2021-05-21 20:22:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5841 transitions. [2021-05-21 20:22:54,024 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5841 transitions. Word has length 25 [2021-05-21 20:22:54,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:54,024 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5841 transitions. [2021-05-21 20:22:54,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5841 transitions. [2021-05-21 20:22:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:54,026 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:54,026 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:54,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-05-21 20:22:54,026 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]=== [2021-05-21 20:22:54,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:54,027 INFO L82 PathProgramCache]: Analyzing trace with hash 818270879, now seen corresponding path program 149 times [2021-05-21 20:22:54,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:54,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406557583] [2021-05-21 20:22:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:54,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:54,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406557583] [2021-05-21 20:22:54,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406557583] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:54,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:54,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:54,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073814276] [2021-05-21 20:22:54,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:54,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:54,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:54,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:54,115 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) [2021-05-21 20:22:54,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:54,179 INFO L93 Difference]: Finished difference Result 3169 states and 11708 transitions. [2021-05-21 20:22:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:54,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:54,184 INFO L225 Difference]: With dead ends: 3169 [2021-05-21 20:22:54,184 INFO L226 Difference]: Without dead ends: 2980 [2021-05-21 20:22:54,185 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:54,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2021-05-21 20:22:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1531. [2021-05-21 20:22:54,221 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) [2021-05-21 20:22:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 6048 transitions. [2021-05-21 20:22:54,224 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 6048 transitions. Word has length 25 [2021-05-21 20:22:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:54,224 INFO L482 AbstractCegarLoop]: Abstraction has 1531 states and 6048 transitions. [2021-05-21 20:22:54,224 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) [2021-05-21 20:22:54,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 6048 transitions. [2021-05-21 20:22:54,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:54,226 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:54,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:54,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-05-21 20:22:54,226 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]=== [2021-05-21 20:22:54,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:54,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1116323837, now seen corresponding path program 150 times [2021-05-21 20:22:54,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:54,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439649573] [2021-05-21 20:22:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:54,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:54,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439649573] [2021-05-21 20:22:54,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439649573] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:54,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:54,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:54,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752403412] [2021-05-21 20:22:54,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:54,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:54,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:54,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:54,317 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) [2021-05-21 20:22:54,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:54,367 INFO L93 Difference]: Finished difference Result 3202 states and 11791 transitions. [2021-05-21 20:22:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:54,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:54,388 INFO L225 Difference]: With dead ends: 3202 [2021-05-21 20:22:54,388 INFO L226 Difference]: Without dead ends: 2893 [2021-05-21 20:22:54,388 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2021-05-21 20:22:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1444. [2021-05-21 20:22:54,428 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) [2021-05-21 20:22:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5753 transitions. [2021-05-21 20:22:54,431 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5753 transitions. Word has length 25 [2021-05-21 20:22:54,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:54,431 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5753 transitions. [2021-05-21 20:22:54,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5753 transitions. [2021-05-21 20:22:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:54,433 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:54,433 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] [2021-05-21 20:22:54,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-05-21 20:22:54,433 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]=== [2021-05-21 20:22:54,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:54,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1279544867, now seen corresponding path program 151 times [2021-05-21 20:22:54,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:54,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409470] [2021-05-21 20:22:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:54,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:54,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409470] [2021-05-21 20:22:54,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409470] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:54,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:54,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:54,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400242497] [2021-05-21 20:22:54,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:54,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:54,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:54,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:54,530 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) [2021-05-21 20:22:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:54,587 INFO L93 Difference]: Finished difference Result 3001 states and 11117 transitions. [2021-05-21 20:22:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:54,587 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 [2021-05-21 20:22:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:54,592 INFO L225 Difference]: With dead ends: 3001 [2021-05-21 20:22:54,593 INFO L226 Difference]: Without dead ends: 2842 [2021-05-21 20:22:54,593 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 [2021-05-21 20:22:54,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2021-05-21 20:22:54,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1492. [2021-05-21 20:22:54,629 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) [2021-05-21 20:22:54,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5937 transitions. [2021-05-21 20:22:54,632 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5937 transitions. Word has length 25 [2021-05-21 20:22:54,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:54,632 INFO L482 AbstractCegarLoop]: Abstraction has 1492 states and 5937 transitions. [2021-05-21 20:22:54,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:54,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5937 transitions. [2021-05-21 20:22:54,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:54,634 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:54,634 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] [2021-05-21 20:22:54,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-05-21 20:22:54,634 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]=== [2021-05-21 20:22:54,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:54,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2007124445, now seen corresponding path program 152 times [2021-05-21 20:22:54,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:54,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627172956] [2021-05-21 20:22:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:54,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:54,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627172956] [2021-05-21 20:22:54,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627172956] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:54,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:54,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:54,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82089482] [2021-05-21 20:22:54,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:54,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:54,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:54,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:54,732 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) [2021-05-21 20:22:54,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:54,785 INFO L93 Difference]: Finished difference Result 3064 states and 11324 transitions. [2021-05-21 20:22:54,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:54,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:54,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:54,790 INFO L225 Difference]: With dead ends: 3064 [2021-05-21 20:22:54,790 INFO L226 Difference]: Without dead ends: 2810 [2021-05-21 20:22:54,790 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 [2021-05-21 20:22:54,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-05-21 20:22:54,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1460. [2021-05-21 20:22:54,840 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) [2021-05-21 20:22:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5809 transitions. [2021-05-21 20:22:54,843 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5809 transitions. Word has length 25 [2021-05-21 20:22:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:54,843 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5809 transitions. [2021-05-21 20:22:54,843 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) [2021-05-21 20:22:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5809 transitions. [2021-05-21 20:22:54,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:54,844 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:54,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:54,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-05-21 20:22:54,845 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]=== [2021-05-21 20:22:54,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:54,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1799001343, now seen corresponding path program 153 times [2021-05-21 20:22:54,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:54,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958381853] [2021-05-21 20:22:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:54,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:54,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958381853] [2021-05-21 20:22:54,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958381853] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:54,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:54,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:54,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778135927] [2021-05-21 20:22:54,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:54,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:54,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:54,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:54,935 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) [2021-05-21 20:22:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:54,986 INFO L93 Difference]: Finished difference Result 2906 states and 10766 transitions. [2021-05-21 20:22:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:54,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:54,991 INFO L225 Difference]: With dead ends: 2906 [2021-05-21 20:22:54,992 INFO L226 Difference]: Without dead ends: 2747 [2021-05-21 20:22:54,992 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 [2021-05-21 20:22:55,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2021-05-21 20:22:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 1476. [2021-05-21 20:22:55,027 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) [2021-05-21 20:22:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5857 transitions. [2021-05-21 20:22:55,030 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5857 transitions. Word has length 25 [2021-05-21 20:22:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:55,030 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5857 transitions. [2021-05-21 20:22:55,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5857 transitions. [2021-05-21 20:22:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:55,032 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:55,032 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:55,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-05-21 20:22:55,032 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]=== [2021-05-21 20:22:55,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:55,032 INFO L82 PathProgramCache]: Analyzing trace with hash -143270657, now seen corresponding path program 154 times [2021-05-21 20:22:55,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:55,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675577917] [2021-05-21 20:22:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:55,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:55,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675577917] [2021-05-21 20:22:55,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675577917] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:55,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:55,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:55,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443084416] [2021-05-21 20:22:55,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:55,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:55,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:55,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:55,137 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) [2021-05-21 20:22:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:55,202 INFO L93 Difference]: Finished difference Result 2794 states and 10429 transitions. [2021-05-21 20:22:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:55,202 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 [2021-05-21 20:22:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:55,207 INFO L225 Difference]: With dead ends: 2794 [2021-05-21 20:22:55,207 INFO L226 Difference]: Without dead ends: 2603 [2021-05-21 20:22:55,207 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 [2021-05-21 20:22:55,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-05-21 20:22:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1460. [2021-05-21 20:22:55,241 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) [2021-05-21 20:22:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5801 transitions. [2021-05-21 20:22:55,244 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5801 transitions. Word has length 25 [2021-05-21 20:22:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:55,244 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5801 transitions. [2021-05-21 20:22:55,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5801 transitions. [2021-05-21 20:22:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:55,246 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:55,246 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:55,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-05-21 20:22:55,246 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]=== [2021-05-21 20:22:55,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:55,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1544975615, now seen corresponding path program 155 times [2021-05-21 20:22:55,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:55,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983799513] [2021-05-21 20:22:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:55,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:55,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983799513] [2021-05-21 20:22:55,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983799513] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:55,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:55,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:55,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394496175] [2021-05-21 20:22:55,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:55,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:55,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:55,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:55,340 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) [2021-05-21 20:22:55,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:55,410 INFO L93 Difference]: Finished difference Result 3041 states and 11257 transitions. [2021-05-21 20:22:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:55,411 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 [2021-05-21 20:22:55,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:55,416 INFO L225 Difference]: With dead ends: 3041 [2021-05-21 20:22:55,416 INFO L226 Difference]: Without dead ends: 2866 [2021-05-21 20:22:55,416 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 [2021-05-21 20:22:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-05-21 20:22:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1500. [2021-05-21 20:22:55,452 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) [2021-05-21 20:22:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5941 transitions. [2021-05-21 20:22:55,455 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5941 transitions. Word has length 25 [2021-05-21 20:22:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:55,455 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5941 transitions. [2021-05-21 20:22:55,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5941 transitions. [2021-05-21 20:22:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:55,457 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:55,457 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:55,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-05-21 20:22:55,457 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]=== [2021-05-21 20:22:55,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:55,457 INFO L82 PathProgramCache]: Analyzing trace with hash -110548771, now seen corresponding path program 156 times [2021-05-21 20:22:55,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:55,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391042124] [2021-05-21 20:22:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:55,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:55,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391042124] [2021-05-21 20:22:55,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391042124] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:55,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:55,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:55,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119429160] [2021-05-21 20:22:55,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:55,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:55,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:55,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:55,551 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) [2021-05-21 20:22:55,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:55,609 INFO L93 Difference]: Finished difference Result 2993 states and 11057 transitions. [2021-05-21 20:22:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:55,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:55,614 INFO L225 Difference]: With dead ends: 2993 [2021-05-21 20:22:55,614 INFO L226 Difference]: Without dead ends: 2715 [2021-05-21 20:22:55,615 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 [2021-05-21 20:22:55,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2021-05-21 20:22:55,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 1444. [2021-05-21 20:22:55,649 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) [2021-05-21 20:22:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5745 transitions. [2021-05-21 20:22:55,652 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5745 transitions. Word has length 25 [2021-05-21 20:22:55,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:55,652 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5745 transitions. [2021-05-21 20:22:55,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:55,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5745 transitions. [2021-05-21 20:22:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:55,654 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:55,654 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:55,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-05-21 20:22:55,654 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]=== [2021-05-21 20:22:55,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:55,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1747685561, now seen corresponding path program 157 times [2021-05-21 20:22:55,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:55,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080413725] [2021-05-21 20:22:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:55,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:55,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080413725] [2021-05-21 20:22:55,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080413725] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:55,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:55,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:55,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832737521] [2021-05-21 20:22:55,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:55,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:55,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:55,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:55,754 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) [2021-05-21 20:22:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:55,812 INFO L93 Difference]: Finished difference Result 2895 states and 10717 transitions. [2021-05-21 20:22:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:55,813 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 [2021-05-21 20:22:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:55,818 INFO L225 Difference]: With dead ends: 2895 [2021-05-21 20:22:55,818 INFO L226 Difference]: Without dead ends: 2736 [2021-05-21 20:22:55,818 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 [2021-05-21 20:22:55,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-05-21 20:22:55,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 1468. [2021-05-21 20:22:55,853 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) [2021-05-21 20:22:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5829 transitions. [2021-05-21 20:22:55,856 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5829 transitions. Word has length 25 [2021-05-21 20:22:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:55,856 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5829 transitions. [2021-05-21 20:22:55,856 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) [2021-05-21 20:22:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5829 transitions. [2021-05-21 20:22:55,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:55,858 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:55,858 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] [2021-05-21 20:22:55,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-05-21 20:22:55,858 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]=== [2021-05-21 20:22:55,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:55,858 INFO L82 PathProgramCache]: Analyzing trace with hash 157750811, now seen corresponding path program 158 times [2021-05-21 20:22:55,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:55,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259082574] [2021-05-21 20:22:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:55,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:55,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259082574] [2021-05-21 20:22:55,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259082574] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:55,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:55,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:55,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034055591] [2021-05-21 20:22:55,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:55,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:55,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:55,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:55,957 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) [2021-05-21 20:22:56,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:56,029 INFO L93 Difference]: Finished difference Result 2925 states and 10810 transitions. [2021-05-21 20:22:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:56,030 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 [2021-05-21 20:22:56,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:56,035 INFO L225 Difference]: With dead ends: 2925 [2021-05-21 20:22:56,035 INFO L226 Difference]: Without dead ends: 2720 [2021-05-21 20:22:56,035 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 [2021-05-21 20:22:56,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2021-05-21 20:22:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1452. [2021-05-21 20:22:56,070 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) [2021-05-21 20:22:56,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5773 transitions. [2021-05-21 20:22:56,072 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5773 transitions. Word has length 25 [2021-05-21 20:22:56,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:56,072 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 5773 transitions. [2021-05-21 20:22:56,072 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) [2021-05-21 20:22:56,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5773 transitions. [2021-05-21 20:22:56,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:56,074 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:56,074 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] [2021-05-21 20:22:56,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-05-21 20:22:56,075 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]=== [2021-05-21 20:22:56,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:56,075 INFO L82 PathProgramCache]: Analyzing trace with hash 253007003, now seen corresponding path program 159 times [2021-05-21 20:22:56,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:56,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876576447] [2021-05-21 20:22:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:56,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:56,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876576447] [2021-05-21 20:22:56,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876576447] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:56,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:56,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:56,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92927529] [2021-05-21 20:22:56,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:56,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:56,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:56,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:56,166 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) [2021-05-21 20:22:56,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:56,235 INFO L93 Difference]: Finished difference Result 2849 states and 10552 transitions. [2021-05-21 20:22:56,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:56,235 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 [2021-05-21 20:22:56,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:56,240 INFO L225 Difference]: With dead ends: 2849 [2021-05-21 20:22:56,241 INFO L226 Difference]: Without dead ends: 2690 [2021-05-21 20:22:56,241 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 [2021-05-21 20:22:56,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-05-21 20:22:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1468. [2021-05-21 20:22:56,276 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) [2021-05-21 20:22:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5821 transitions. [2021-05-21 20:22:56,279 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5821 transitions. Word has length 25 [2021-05-21 20:22:56,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:56,279 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5821 transitions. [2021-05-21 20:22:56,279 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) [2021-05-21 20:22:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5821 transitions. [2021-05-21 20:22:56,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:56,281 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:56,281 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] [2021-05-21 20:22:56,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-05-21 20:22:56,281 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]=== [2021-05-21 20:22:56,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:56,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1689264997, now seen corresponding path program 160 times [2021-05-21 20:22:56,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:56,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919493646] [2021-05-21 20:22:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:56,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:56,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919493646] [2021-05-21 20:22:56,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919493646] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:56,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:56,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:56,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172766910] [2021-05-21 20:22:56,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:56,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:56,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:56,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:56,381 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) [2021-05-21 20:22:56,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:56,470 INFO L93 Difference]: Finished difference Result 2737 states and 10215 transitions. [2021-05-21 20:22:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:56,470 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 [2021-05-21 20:22:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:56,475 INFO L225 Difference]: With dead ends: 2737 [2021-05-21 20:22:56,475 INFO L226 Difference]: Without dead ends: 2546 [2021-05-21 20:22:56,475 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:56,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-05-21 20:22:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1452. [2021-05-21 20:22:56,509 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) [2021-05-21 20:22:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5765 transitions. [2021-05-21 20:22:56,512 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5765 transitions. Word has length 25 [2021-05-21 20:22:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:56,512 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 5765 transitions. [2021-05-21 20:22:56,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5765 transitions. [2021-05-21 20:22:56,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:56,514 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:56,514 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:56,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-05-21 20:22:56,514 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]=== [2021-05-21 20:22:56,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:56,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1670168957, now seen corresponding path program 161 times [2021-05-21 20:22:56,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:56,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454952745] [2021-05-21 20:22:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:56,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:56,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454952745] [2021-05-21 20:22:56,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454952745] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:56,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:56,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:56,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790041794] [2021-05-21 20:22:56,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:56,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:56,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:56,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:56,617 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) [2021-05-21 20:22:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:56,688 INFO L93 Difference]: Finished difference Result 2887 states and 10689 transitions. [2021-05-21 20:22:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:56,688 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 [2021-05-21 20:22:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:56,693 INFO L225 Difference]: With dead ends: 2887 [2021-05-21 20:22:56,693 INFO L226 Difference]: Without dead ends: 2698 [2021-05-21 20:22:56,693 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-05-21 20:22:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 1476. [2021-05-21 20:22:56,728 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) [2021-05-21 20:22:56,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5841 transitions. [2021-05-21 20:22:56,731 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5841 transitions. Word has length 25 [2021-05-21 20:22:56,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:56,731 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5841 transitions. [2021-05-21 20:22:56,731 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) [2021-05-21 20:22:56,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5841 transitions. [2021-05-21 20:22:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:56,733 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:56,733 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:56,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-05-21 20:22:56,733 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]=== [2021-05-21 20:22:56,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:56,733 INFO L82 PathProgramCache]: Analyzing trace with hash 929216859, now seen corresponding path program 162 times [2021-05-21 20:22:56,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:56,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859023744] [2021-05-21 20:22:56,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:56,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:56,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859023744] [2021-05-21 20:22:56,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859023744] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:56,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:56,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:56,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704461548] [2021-05-21 20:22:56,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:56,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:56,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:56,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:56,845 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) [2021-05-21 20:22:56,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:56,917 INFO L93 Difference]: Finished difference Result 2745 states and 10235 transitions. [2021-05-21 20:22:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:56,917 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 [2021-05-21 20:22:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:56,922 INFO L225 Difference]: With dead ends: 2745 [2021-05-21 20:22:56,922 INFO L226 Difference]: Without dead ends: 2538 [2021-05-21 20:22:56,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2021-05-21 20:22:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 1444. [2021-05-21 20:22:56,956 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) [2021-05-21 20:22:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5741 transitions. [2021-05-21 20:22:56,959 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5741 transitions. Word has length 25 [2021-05-21 20:22:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:56,959 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5741 transitions. [2021-05-21 20:22:56,959 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) [2021-05-21 20:22:56,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5741 transitions. [2021-05-21 20:22:56,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:56,961 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:56,961 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] [2021-05-21 20:22:56,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-05-21 20:22:56,961 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]=== [2021-05-21 20:22:56,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:56,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1719585057, now seen corresponding path program 163 times [2021-05-21 20:22:56,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:56,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326271936] [2021-05-21 20:22:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:57,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:57,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326271936] [2021-05-21 20:22:57,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326271936] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:57,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:57,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:57,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951864618] [2021-05-21 20:22:57,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:57,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:57,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:57,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:57,064 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) [2021-05-21 20:22:57,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:57,126 INFO L93 Difference]: Finished difference Result 3119 states and 11567 transitions. [2021-05-21 20:22:57,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:57,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:57,131 INFO L225 Difference]: With dead ends: 3119 [2021-05-21 20:22:57,131 INFO L226 Difference]: Without dead ends: 2930 [2021-05-21 20:22:57,132 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 [2021-05-21 20:22:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-05-21 20:22:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1496. [2021-05-21 20:22:57,168 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) [2021-05-21 20:22:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5937 transitions. [2021-05-21 20:22:57,171 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5937 transitions. Word has length 25 [2021-05-21 20:22:57,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:57,171 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5937 transitions. [2021-05-21 20:22:57,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:57,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5937 transitions. [2021-05-21 20:22:57,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:57,173 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:57,173 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:57,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-05-21 20:22:57,173 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]=== [2021-05-21 20:22:57,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:57,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1834430141, now seen corresponding path program 164 times [2021-05-21 20:22:57,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:57,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906752534] [2021-05-21 20:22:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:57,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:57,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906752534] [2021-05-21 20:22:57,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906752534] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:57,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:57,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:57,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940482347] [2021-05-21 20:22:57,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:57,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:57,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:57,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:57,275 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) [2021-05-21 20:22:57,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:57,344 INFO L93 Difference]: Finished difference Result 3105 states and 11498 transitions. [2021-05-21 20:22:57,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:57,345 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 [2021-05-21 20:22:57,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:57,350 INFO L225 Difference]: With dead ends: 3105 [2021-05-21 20:22:57,350 INFO L226 Difference]: Without dead ends: 2906 [2021-05-21 20:22:57,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:57,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2021-05-21 20:22:57,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1472. [2021-05-21 20:22:57,386 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) [2021-05-21 20:22:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5849 transitions. [2021-05-21 20:22:57,389 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5849 transitions. Word has length 25 [2021-05-21 20:22:57,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:57,389 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5849 transitions. [2021-05-21 20:22:57,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:57,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5849 transitions. [2021-05-21 20:22:57,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:57,391 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:57,391 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] [2021-05-21 20:22:57,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-05-21 20:22:57,391 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]=== [2021-05-21 20:22:57,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:57,392 INFO L82 PathProgramCache]: Analyzing trace with hash 754346813, now seen corresponding path program 165 times [2021-05-21 20:22:57,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:57,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31744797] [2021-05-21 20:22:57,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:57,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:57,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31744797] [2021-05-21 20:22:57,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31744797] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:57,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:57,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:57,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991275956] [2021-05-21 20:22:57,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:57,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:57,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:57,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:57,488 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) [2021-05-21 20:22:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:57,560 INFO L93 Difference]: Finished difference Result 3142 states and 11614 transitions. [2021-05-21 20:22:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:57,560 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 [2021-05-21 20:22:57,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:57,565 INFO L225 Difference]: With dead ends: 3142 [2021-05-21 20:22:57,565 INFO L226 Difference]: Without dead ends: 2953 [2021-05-21 20:22:57,566 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 [2021-05-21 20:22:57,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2021-05-21 20:22:57,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1535. [2021-05-21 20:22:57,603 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) [2021-05-21 20:22:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6056 transitions. [2021-05-21 20:22:57,605 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6056 transitions. Word has length 25 [2021-05-21 20:22:57,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:57,606 INFO L482 AbstractCegarLoop]: Abstraction has 1535 states and 6056 transitions. [2021-05-21 20:22:57,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6056 transitions. [2021-05-21 20:22:57,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:57,608 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:57,608 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:57,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-05-21 20:22:57,608 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]=== [2021-05-21 20:22:57,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:57,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1520667587, now seen corresponding path program 166 times [2021-05-21 20:22:57,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:57,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134990971] [2021-05-21 20:22:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:57,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:57,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134990971] [2021-05-21 20:22:57,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134990971] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:57,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:57,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:57,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964647677] [2021-05-21 20:22:57,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:57,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:57,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:57,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:57,700 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) [2021-05-21 20:22:57,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:57,749 INFO L93 Difference]: Finished difference Result 3175 states and 11697 transitions. [2021-05-21 20:22:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:57,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:57,754 INFO L225 Difference]: With dead ends: 3175 [2021-05-21 20:22:57,755 INFO L226 Difference]: Without dead ends: 2890 [2021-05-21 20:22:57,755 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 [2021-05-21 20:22:57,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2021-05-21 20:22:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1472. [2021-05-21 20:22:57,791 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) [2021-05-21 20:22:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5821 transitions. [2021-05-21 20:22:57,793 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5821 transitions. Word has length 25 [2021-05-21 20:22:57,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:57,793 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5821 transitions. [2021-05-21 20:22:57,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5821 transitions. [2021-05-21 20:22:57,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:57,795 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:57,795 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:57,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-05-21 20:22:57,796 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]=== [2021-05-21 20:22:57,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:57,796 INFO L82 PathProgramCache]: Analyzing trace with hash 500513947, now seen corresponding path program 167 times [2021-05-21 20:22:57,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:57,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506307519] [2021-05-21 20:22:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:57,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:57,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506307519] [2021-05-21 20:22:57,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506307519] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:57,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:57,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:57,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756526132] [2021-05-21 20:22:57,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:57,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:57,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:57,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:57,906 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) [2021-05-21 20:22:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:57,966 INFO L93 Difference]: Finished difference Result 3091 states and 11422 transitions. [2021-05-21 20:22:57,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:57,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:57,971 INFO L225 Difference]: With dead ends: 3091 [2021-05-21 20:22:57,971 INFO L226 Difference]: Without dead ends: 2916 [2021-05-21 20:22:57,972 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 [2021-05-21 20:22:57,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-05-21 20:22:58,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1512. [2021-05-21 20:22:58,008 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) [2021-05-21 20:22:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5961 transitions. [2021-05-21 20:22:58,011 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5961 transitions. Word has length 25 [2021-05-21 20:22:58,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:58,011 INFO L482 AbstractCegarLoop]: Abstraction has 1512 states and 5961 transitions. [2021-05-21 20:22:58,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:58,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5961 transitions. [2021-05-21 20:22:58,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:58,013 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:58,013 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] [2021-05-21 20:22:58,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-05-21 20:22:58,013 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]=== [2021-05-21 20:22:58,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:58,013 INFO L82 PathProgramCache]: Analyzing trace with hash 718865533, now seen corresponding path program 168 times [2021-05-21 20:22:58,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:58,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540957213] [2021-05-21 20:22:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:58,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:58,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540957213] [2021-05-21 20:22:58,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540957213] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:58,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:58,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:58,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188120302] [2021-05-21 20:22:58,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:58,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:58,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:58,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:58,119 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) [2021-05-21 20:22:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:58,170 INFO L93 Difference]: Finished difference Result 3043 states and 11222 transitions. [2021-05-21 20:22:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:58,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:58,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:58,175 INFO L225 Difference]: With dead ends: 3043 [2021-05-21 20:22:58,175 INFO L226 Difference]: Without dead ends: 2741 [2021-05-21 20:22:58,175 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 [2021-05-21 20:22:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2021-05-21 20:22:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 1432. [2021-05-21 20:22:58,210 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) [2021-05-21 20:22:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5703 transitions. [2021-05-21 20:22:58,213 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5703 transitions. Word has length 25 [2021-05-21 20:22:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:58,213 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5703 transitions. [2021-05-21 20:22:58,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5703 transitions. [2021-05-21 20:22:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:58,215 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:58,215 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] [2021-05-21 20:22:58,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-05-21 20:22:58,215 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]=== [2021-05-21 20:22:58,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:58,215 INFO L82 PathProgramCache]: Analyzing trace with hash -885386243, now seen corresponding path program 169 times [2021-05-21 20:22:58,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:58,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680644895] [2021-05-21 20:22:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:58,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:58,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680644895] [2021-05-21 20:22:58,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680644895] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:58,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:58,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:58,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814819154] [2021-05-21 20:22:58,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:58,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:58,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:58,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:58,304 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) [2021-05-21 20:22:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:58,353 INFO L93 Difference]: Finished difference Result 3020 states and 11214 transitions. [2021-05-21 20:22:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:58,353 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 [2021-05-21 20:22:58,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:58,358 INFO L225 Difference]: With dead ends: 3020 [2021-05-21 20:22:58,359 INFO L226 Difference]: Without dead ends: 2861 [2021-05-21 20:22:58,359 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 [2021-05-21 20:22:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-05-21 20:22:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 1488. [2021-05-21 20:22:58,395 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) [2021-05-21 20:22:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5927 transitions. [2021-05-21 20:22:58,398 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5927 transitions. Word has length 25 [2021-05-21 20:22:58,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:58,398 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5927 transitions. [2021-05-21 20:22:58,398 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) [2021-05-21 20:22:58,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5927 transitions. [2021-05-21 20:22:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:58,400 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:58,400 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] [2021-05-21 20:22:58,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-05-21 20:22:58,400 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]=== [2021-05-21 20:22:58,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:58,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1893684227, now seen corresponding path program 170 times [2021-05-21 20:22:58,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:58,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996647411] [2021-05-21 20:22:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:58,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:58,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996647411] [2021-05-21 20:22:58,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996647411] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:58,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:58,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:58,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910392860] [2021-05-21 20:22:58,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:58,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:58,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:58,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:58,492 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) [2021-05-21 20:22:58,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:58,543 INFO L93 Difference]: Finished difference Result 3083 states and 11421 transitions. [2021-05-21 20:22:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:58,543 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 [2021-05-21 20:22:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:58,548 INFO L225 Difference]: With dead ends: 3083 [2021-05-21 20:22:58,548 INFO L226 Difference]: Without dead ends: 2829 [2021-05-21 20:22:58,549 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 [2021-05-21 20:22:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2021-05-21 20:22:58,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1456. [2021-05-21 20:22:58,585 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) [2021-05-21 20:22:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5799 transitions. [2021-05-21 20:22:58,587 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5799 transitions. Word has length 25 [2021-05-21 20:22:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:58,587 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5799 transitions. [2021-05-21 20:22:58,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5799 transitions. [2021-05-21 20:22:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:58,589 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:58,589 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] [2021-05-21 20:22:58,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-05-21 20:22:58,589 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]=== [2021-05-21 20:22:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:58,590 INFO L82 PathProgramCache]: Analyzing trace with hash 103647263, now seen corresponding path program 171 times [2021-05-21 20:22:58,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:58,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045878130] [2021-05-21 20:22:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:58,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:58,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045878130] [2021-05-21 20:22:58,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045878130] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:58,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:58,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:58,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670045571] [2021-05-21 20:22:58,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:58,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:58,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:58,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:58,682 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) [2021-05-21 20:22:58,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:58,749 INFO L93 Difference]: Finished difference Result 2969 states and 11015 transitions. [2021-05-21 20:22:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:58,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:58,754 INFO L225 Difference]: With dead ends: 2969 [2021-05-21 20:22:58,755 INFO L226 Difference]: Without dead ends: 2810 [2021-05-21 20:22:58,755 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 [2021-05-21 20:22:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-05-21 20:22:58,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1472. [2021-05-21 20:22:58,801 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) [2021-05-21 20:22:58,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5847 transitions. [2021-05-21 20:22:58,804 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5847 transitions. Word has length 25 [2021-05-21 20:22:58,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:58,804 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5847 transitions. [2021-05-21 20:22:58,804 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) [2021-05-21 20:22:58,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5847 transitions. [2021-05-21 20:22:58,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:58,806 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:58,806 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] [2021-05-21 20:22:58,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-05-21 20:22:58,806 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]=== [2021-05-21 20:22:58,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:58,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1111945247, now seen corresponding path program 172 times [2021-05-21 20:22:58,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:58,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416375166] [2021-05-21 20:22:58,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:58,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:58,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416375166] [2021-05-21 20:22:58,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416375166] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:58,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:58,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:58,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207450917] [2021-05-21 20:22:58,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:58,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:58,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:58,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:58,904 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) [2021-05-21 20:22:58,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:58,966 INFO L93 Difference]: Finished difference Result 2997 states and 11103 transitions. [2021-05-21 20:22:58,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:58,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:58,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:58,971 INFO L225 Difference]: With dead ends: 2997 [2021-05-21 20:22:58,971 INFO L226 Difference]: Without dead ends: 2794 [2021-05-21 20:22:58,971 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 [2021-05-21 20:22:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2021-05-21 20:22:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 1456. [2021-05-21 20:22:59,007 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) [2021-05-21 20:22:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5791 transitions. [2021-05-21 20:22:59,010 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5791 transitions. Word has length 25 [2021-05-21 20:22:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:59,010 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5791 transitions. [2021-05-21 20:22:59,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5791 transitions. [2021-05-21 20:22:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:59,012 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:59,012 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:59,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-05-21 20:22:59,012 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]=== [2021-05-21 20:22:59,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:59,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1494775777, now seen corresponding path program 173 times [2021-05-21 20:22:59,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:59,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034782700] [2021-05-21 20:22:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:59,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:59,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034782700] [2021-05-21 20:22:59,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034782700] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:59,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:59,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:59,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144268129] [2021-05-21 20:22:59,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:59,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:59,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:59,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:59,098 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) [2021-05-21 20:22:59,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:59,159 INFO L93 Difference]: Finished difference Result 3090 states and 11457 transitions. [2021-05-21 20:22:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:59,159 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 [2021-05-21 20:22:59,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:59,164 INFO L225 Difference]: With dead ends: 3090 [2021-05-21 20:22:59,164 INFO L226 Difference]: Without dead ends: 2903 [2021-05-21 20:22:59,164 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 [2021-05-21 20:22:59,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-05-21 20:22:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1502. [2021-05-21 20:22:59,201 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) [2021-05-21 20:22:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5948 transitions. [2021-05-21 20:22:59,203 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5948 transitions. Word has length 25 [2021-05-21 20:22:59,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:59,204 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 5948 transitions. [2021-05-21 20:22:59,204 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) [2021-05-21 20:22:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5948 transitions. [2021-05-21 20:22:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:59,205 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:59,206 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:59,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-05-21 20:22:59,206 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]=== [2021-05-21 20:22:59,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:59,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1847915267, now seen corresponding path program 174 times [2021-05-21 20:22:59,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:59,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113252181] [2021-05-21 20:22:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:59,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:59,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113252181] [2021-05-21 20:22:59,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113252181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:59,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:59,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:59,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72031523] [2021-05-21 20:22:59,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:59,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:59,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:59,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:59,287 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) [2021-05-21 20:22:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:59,337 INFO L93 Difference]: Finished difference Result 3125 states and 11546 transitions. [2021-05-21 20:22:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:59,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:59,342 INFO L225 Difference]: With dead ends: 3125 [2021-05-21 20:22:59,342 INFO L226 Difference]: Without dead ends: 2841 [2021-05-21 20:22:59,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:22:59,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2021-05-21 20:22:59,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1440. [2021-05-21 20:22:59,378 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) [2021-05-21 20:22:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5735 transitions. [2021-05-21 20:22:59,380 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5735 transitions. Word has length 25 [2021-05-21 20:22:59,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:59,380 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5735 transitions. [2021-05-21 20:22:59,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5735 transitions. [2021-05-21 20:22:59,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:59,382 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:59,382 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:59,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-05-21 20:22:59,382 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]=== [2021-05-21 20:22:59,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:59,383 INFO L82 PathProgramCache]: Analyzing trace with hash 515731295, now seen corresponding path program 175 times [2021-05-21 20:22:59,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:59,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727602696] [2021-05-21 20:22:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:59,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:59,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727602696] [2021-05-21 20:22:59,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727602696] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:59,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:59,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:59,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222761371] [2021-05-21 20:22:59,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:59,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:59,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:59,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:59,490 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) [2021-05-21 20:22:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:59,549 INFO L93 Difference]: Finished difference Result 2970 states and 11015 transitions. [2021-05-21 20:22:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:59,550 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 [2021-05-21 20:22:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:59,555 INFO L225 Difference]: With dead ends: 2970 [2021-05-21 20:22:59,555 INFO L226 Difference]: Without dead ends: 2811 [2021-05-21 20:22:59,555 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 [2021-05-21 20:22:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-05-21 20:22:59,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1488. [2021-05-21 20:22:59,591 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) [2021-05-21 20:22:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5919 transitions. [2021-05-21 20:22:59,594 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5919 transitions. Word has length 25 [2021-05-21 20:22:59,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:59,594 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5919 transitions. [2021-05-21 20:22:59,594 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) [2021-05-21 20:22:59,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5919 transitions. [2021-05-21 20:22:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:59,596 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:59,596 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:59,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-05-21 20:22:59,596 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]=== [2021-05-21 20:22:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:59,597 INFO L82 PathProgramCache]: Analyzing trace with hash -492566689, now seen corresponding path program 176 times [2021-05-21 20:22:59,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:59,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033088913] [2021-05-21 20:22:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:59,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:59,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033088913] [2021-05-21 20:22:59,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033088913] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:59,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:59,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:59,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966303522] [2021-05-21 20:22:59,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:59,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:59,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:59,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:59,689 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) [2021-05-21 20:22:59,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:59,737 INFO L93 Difference]: Finished difference Result 3033 states and 11222 transitions. [2021-05-21 20:22:59,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:59,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:22:59,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:59,742 INFO L225 Difference]: With dead ends: 3033 [2021-05-21 20:22:59,742 INFO L226 Difference]: Without dead ends: 2779 [2021-05-21 20:22:59,742 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 [2021-05-21 20:22:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2021-05-21 20:22:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 1456. [2021-05-21 20:22:59,778 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) [2021-05-21 20:22:59,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5791 transitions. [2021-05-21 20:22:59,780 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5791 transitions. Word has length 25 [2021-05-21 20:22:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:59,780 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5791 transitions. [2021-05-21 20:22:59,780 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) [2021-05-21 20:22:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5791 transitions. [2021-05-21 20:22:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:59,782 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:59,782 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] [2021-05-21 20:22:59,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-05-21 20:22:59,782 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]=== [2021-05-21 20:22:59,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:59,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1556289311, now seen corresponding path program 177 times [2021-05-21 20:22:59,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:59,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647834533] [2021-05-21 20:22:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:22:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:22:59,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:22:59,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647834533] [2021-05-21 20:22:59,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647834533] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:22:59,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:22:59,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:22:59,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416250452] [2021-05-21 20:22:59,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:22:59,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:22:59,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:22:59,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:22:59,867 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) [2021-05-21 20:22:59,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:22:59,917 INFO L93 Difference]: Finished difference Result 2875 states and 10664 transitions. [2021-05-21 20:22:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:22:59,918 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 [2021-05-21 20:22:59,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:22:59,922 INFO L225 Difference]: With dead ends: 2875 [2021-05-21 20:22:59,922 INFO L226 Difference]: Without dead ends: 2716 [2021-05-21 20:22:59,923 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 [2021-05-21 20:22:59,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2021-05-21 20:22:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 1472. [2021-05-21 20:22:59,958 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) [2021-05-21 20:22:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5839 transitions. [2021-05-21 20:22:59,961 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5839 transitions. Word has length 25 [2021-05-21 20:22:59,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:22:59,961 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5839 transitions. [2021-05-21 20:22:59,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:22:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5839 transitions. [2021-05-21 20:22:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:22:59,963 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:22:59,963 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:22:59,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-05-21 20:22:59,963 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]=== [2021-05-21 20:22:59,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:22:59,963 INFO L82 PathProgramCache]: Analyzing trace with hash -385982689, now seen corresponding path program 178 times [2021-05-21 20:22:59,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:22:59,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987632922] [2021-05-21 20:22:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:22:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:00,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:00,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987632922] [2021-05-21 20:23:00,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987632922] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:00,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:00,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:00,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260868506] [2021-05-21 20:23:00,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:00,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:00,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:00,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:00,056 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) [2021-05-21 20:23:00,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:00,124 INFO L93 Difference]: Finished difference Result 2763 states and 10327 transitions. [2021-05-21 20:23:00,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:00,125 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 [2021-05-21 20:23:00,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:00,129 INFO L225 Difference]: With dead ends: 2763 [2021-05-21 20:23:00,129 INFO L226 Difference]: Without dead ends: 2572 [2021-05-21 20:23:00,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:00,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2021-05-21 20:23:00,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1456. [2021-05-21 20:23:00,164 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) [2021-05-21 20:23:00,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5783 transitions. [2021-05-21 20:23:00,166 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5783 transitions. Word has length 25 [2021-05-21 20:23:00,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:00,166 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5783 transitions. [2021-05-21 20:23:00,166 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) [2021-05-21 20:23:00,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5783 transitions. [2021-05-21 20:23:00,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:00,168 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:00,168 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] [2021-05-21 20:23:00,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-05-21 20:23:00,168 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]=== [2021-05-21 20:23:00,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:00,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1302263583, now seen corresponding path program 179 times [2021-05-21 20:23:00,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:00,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991663528] [2021-05-21 20:23:00,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:00,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:00,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991663528] [2021-05-21 20:23:00,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991663528] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:00,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:00,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:00,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716141167] [2021-05-21 20:23:00,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:00,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:00,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:00,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:00,263 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) [2021-05-21 20:23:00,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:00,326 INFO L93 Difference]: Finished difference Result 3010 states and 11155 transitions. [2021-05-21 20:23:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:00,326 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 [2021-05-21 20:23:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:00,331 INFO L225 Difference]: With dead ends: 3010 [2021-05-21 20:23:00,331 INFO L226 Difference]: Without dead ends: 2835 [2021-05-21 20:23:00,331 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 [2021-05-21 20:23:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-05-21 20:23:00,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 1496. [2021-05-21 20:23:00,367 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) [2021-05-21 20:23:00,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5923 transitions. [2021-05-21 20:23:00,370 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5923 transitions. Word has length 25 [2021-05-21 20:23:00,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:00,370 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5923 transitions. [2021-05-21 20:23:00,370 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) [2021-05-21 20:23:00,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5923 transitions. [2021-05-21 20:23:00,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:00,372 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:00,372 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] [2021-05-21 20:23:00,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-05-21 20:23:00,372 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]=== [2021-05-21 20:23:00,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:00,373 INFO L82 PathProgramCache]: Analyzing trace with hash -353260803, now seen corresponding path program 180 times [2021-05-21 20:23:00,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:00,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336955539] [2021-05-21 20:23:00,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:00,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:00,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336955539] [2021-05-21 20:23:00,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336955539] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:00,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:00,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:00,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256302715] [2021-05-21 20:23:00,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:00,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:00,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:00,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:00,468 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) [2021-05-21 20:23:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:00,518 INFO L93 Difference]: Finished difference Result 2962 states and 10955 transitions. [2021-05-21 20:23:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:00,518 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 [2021-05-21 20:23:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:00,523 INFO L225 Difference]: With dead ends: 2962 [2021-05-21 20:23:00,523 INFO L226 Difference]: Without dead ends: 2684 [2021-05-21 20:23:00,523 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 [2021-05-21 20:23:00,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-05-21 20:23:00,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1440. [2021-05-21 20:23:00,558 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) [2021-05-21 20:23:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5727 transitions. [2021-05-21 20:23:00,560 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5727 transitions. Word has length 25 [2021-05-21 20:23:00,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:00,560 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5727 transitions. [2021-05-21 20:23:00,561 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) [2021-05-21 20:23:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5727 transitions. [2021-05-21 20:23:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:00,562 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:00,562 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] [2021-05-21 20:23:00,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-05-21 20:23:00,562 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]=== [2021-05-21 20:23:00,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:00,563 INFO L82 PathProgramCache]: Analyzing trace with hash -645911871, now seen corresponding path program 181 times [2021-05-21 20:23:00,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:00,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198417663] [2021-05-21 20:23:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:00,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:00,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198417663] [2021-05-21 20:23:00,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198417663] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:00,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:00,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:00,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44087916] [2021-05-21 20:23:00,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:00,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:00,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:00,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:00,647 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) [2021-05-21 20:23:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:00,697 INFO L93 Difference]: Finished difference Result 2860 states and 10605 transitions. [2021-05-21 20:23:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:00,697 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 [2021-05-21 20:23:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:00,713 INFO L225 Difference]: With dead ends: 2860 [2021-05-21 20:23:00,713 INFO L226 Difference]: Without dead ends: 2701 [2021-05-21 20:23:00,713 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 [2021-05-21 20:23:00,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-05-21 20:23:00,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 1464. [2021-05-21 20:23:00,747 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) [2021-05-21 20:23:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5811 transitions. [2021-05-21 20:23:00,749 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5811 transitions. Word has length 25 [2021-05-21 20:23:00,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:00,749 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5811 transitions. [2021-05-21 20:23:00,749 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) [2021-05-21 20:23:00,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5811 transitions. [2021-05-21 20:23:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:00,751 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:00,751 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] [2021-05-21 20:23:00,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-05-21 20:23:00,751 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]=== [2021-05-21 20:23:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:00,752 INFO L82 PathProgramCache]: Analyzing trace with hash 362386113, now seen corresponding path program 182 times [2021-05-21 20:23:00,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:00,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408970481] [2021-05-21 20:23:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:00,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:00,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408970481] [2021-05-21 20:23:00,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408970481] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:00,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:00,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:00,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605585958] [2021-05-21 20:23:00,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:00,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:00,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:00,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:00,835 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) [2021-05-21 20:23:00,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:00,905 INFO L93 Difference]: Finished difference Result 2888 states and 10693 transitions. [2021-05-21 20:23:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:00,905 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 [2021-05-21 20:23:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:00,910 INFO L225 Difference]: With dead ends: 2888 [2021-05-21 20:23:00,910 INFO L226 Difference]: Without dead ends: 2685 [2021-05-21 20:23:00,910 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 [2021-05-21 20:23:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-05-21 20:23:00,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1448. [2021-05-21 20:23:00,945 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) [2021-05-21 20:23:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5755 transitions. [2021-05-21 20:23:00,948 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5755 transitions. Word has length 25 [2021-05-21 20:23:00,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:00,948 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5755 transitions. [2021-05-21 20:23:00,948 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) [2021-05-21 20:23:00,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5755 transitions. [2021-05-21 20:23:00,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:00,950 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:00,950 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] [2021-05-21 20:23:00,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-05-21 20:23:00,950 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]=== [2021-05-21 20:23:00,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:00,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1532975775, now seen corresponding path program 183 times [2021-05-21 20:23:00,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:00,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893759801] [2021-05-21 20:23:00,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:01,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:01,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893759801] [2021-05-21 20:23:01,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893759801] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:01,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:01,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:01,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837767123] [2021-05-21 20:23:01,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:01,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:01,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:01,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:01,041 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) [2021-05-21 20:23:01,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:01,101 INFO L93 Difference]: Finished difference Result 2816 states and 10445 transitions. [2021-05-21 20:23:01,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:01,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:01,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:01,106 INFO L225 Difference]: With dead ends: 2816 [2021-05-21 20:23:01,106 INFO L226 Difference]: Without dead ends: 2657 [2021-05-21 20:23:01,106 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 [2021-05-21 20:23:01,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2021-05-21 20:23:01,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 1464. [2021-05-21 20:23:01,141 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) [2021-05-21 20:23:01,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5803 transitions. [2021-05-21 20:23:01,143 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5803 transitions. Word has length 25 [2021-05-21 20:23:01,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:01,144 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5803 transitions. [2021-05-21 20:23:01,144 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) [2021-05-21 20:23:01,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5803 transitions. [2021-05-21 20:23:01,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:01,145 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:01,145 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:01,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-05-21 20:23:01,146 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]=== [2021-05-21 20:23:01,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:01,146 INFO L82 PathProgramCache]: Analyzing trace with hash 887444161, now seen corresponding path program 184 times [2021-05-21 20:23:01,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:01,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490607400] [2021-05-21 20:23:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:01,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:01,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490607400] [2021-05-21 20:23:01,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490607400] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:01,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:01,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:01,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890492236] [2021-05-21 20:23:01,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:01,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:01,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:01,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:01,221 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) [2021-05-21 20:23:01,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:01,282 INFO L93 Difference]: Finished difference Result 2704 states and 10108 transitions. [2021-05-21 20:23:01,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:01,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:01,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:01,287 INFO L225 Difference]: With dead ends: 2704 [2021-05-21 20:23:01,287 INFO L226 Difference]: Without dead ends: 2513 [2021-05-21 20:23:01,288 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-05-21 20:23:01,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 1448. [2021-05-21 20:23:01,321 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) [2021-05-21 20:23:01,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5747 transitions. [2021-05-21 20:23:01,324 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5747 transitions. Word has length 25 [2021-05-21 20:23:01,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:01,324 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5747 transitions. [2021-05-21 20:23:01,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5747 transitions. [2021-05-21 20:23:01,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:01,326 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:01,326 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] [2021-05-21 20:23:01,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-05-21 20:23:01,326 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]=== [2021-05-21 20:23:01,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:01,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2145199423, now seen corresponding path program 185 times [2021-05-21 20:23:01,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:01,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469582406] [2021-05-21 20:23:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:01,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:01,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469582406] [2021-05-21 20:23:01,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469582406] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:01,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:01,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:01,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558794754] [2021-05-21 20:23:01,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:01,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:01,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:01,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:01,401 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) [2021-05-21 20:23:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:01,463 INFO L93 Difference]: Finished difference Result 2852 states and 10577 transitions. [2021-05-21 20:23:01,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:01,464 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 [2021-05-21 20:23:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:01,469 INFO L225 Difference]: With dead ends: 2852 [2021-05-21 20:23:01,469 INFO L226 Difference]: Without dead ends: 2665 [2021-05-21 20:23:01,469 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-05-21 20:23:01,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1472. [2021-05-21 20:23:01,504 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) [2021-05-21 20:23:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5823 transitions. [2021-05-21 20:23:01,507 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5823 transitions. Word has length 25 [2021-05-21 20:23:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:01,507 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5823 transitions. [2021-05-21 20:23:01,507 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) [2021-05-21 20:23:01,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5823 transitions. [2021-05-21 20:23:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:01,509 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:01,509 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] [2021-05-21 20:23:01,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-05-21 20:23:01,509 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]=== [2021-05-21 20:23:01,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:01,509 INFO L82 PathProgramCache]: Analyzing trace with hash 757623327, now seen corresponding path program 186 times [2021-05-21 20:23:01,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:01,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95543494] [2021-05-21 20:23:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:01,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:01,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95543494] [2021-05-21 20:23:01,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95543494] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:01,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:01,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:01,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264521902] [2021-05-21 20:23:01,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:01,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:01,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:01,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:01,587 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) [2021-05-21 20:23:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:01,664 INFO L93 Difference]: Finished difference Result 2712 states and 10128 transitions. [2021-05-21 20:23:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:01,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:01,670 INFO L225 Difference]: With dead ends: 2712 [2021-05-21 20:23:01,670 INFO L226 Difference]: Without dead ends: 2505 [2021-05-21 20:23:01,670 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:01,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2021-05-21 20:23:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 1440. [2021-05-21 20:23:01,705 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) [2021-05-21 20:23:01,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5723 transitions. [2021-05-21 20:23:01,708 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5723 transitions. Word has length 25 [2021-05-21 20:23:01,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:01,708 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5723 transitions. [2021-05-21 20:23:01,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:01,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5723 transitions. [2021-05-21 20:23:01,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:01,710 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:01,710 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:01,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-05-21 20:23:01,710 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]=== [2021-05-21 20:23:01,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:01,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1056797377, now seen corresponding path program 187 times [2021-05-21 20:23:01,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:01,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130072535] [2021-05-21 20:23:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:01,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:01,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130072535] [2021-05-21 20:23:01,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130072535] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:01,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:01,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:01,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702061853] [2021-05-21 20:23:01,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:01,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:01,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:01,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:01,792 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) [2021-05-21 20:23:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:01,854 INFO L93 Difference]: Finished difference Result 3057 states and 11371 transitions. [2021-05-21 20:23:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:01,855 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 [2021-05-21 20:23:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:01,860 INFO L225 Difference]: With dead ends: 3057 [2021-05-21 20:23:01,860 INFO L226 Difference]: Without dead ends: 2870 [2021-05-21 20:23:01,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:01,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-05-21 20:23:01,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1484. [2021-05-21 20:23:01,898 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) [2021-05-21 20:23:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5891 transitions. [2021-05-21 20:23:01,901 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5891 transitions. Word has length 25 [2021-05-21 20:23:01,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:01,901 INFO L482 AbstractCegarLoop]: Abstraction has 1484 states and 5891 transitions. [2021-05-21 20:23:01,901 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) [2021-05-21 20:23:01,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5891 transitions. [2021-05-21 20:23:01,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:01,904 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:01,904 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:01,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-05-21 20:23:01,904 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]=== [2021-05-21 20:23:01,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:01,904 INFO L82 PathProgramCache]: Analyzing trace with hash -335347169, now seen corresponding path program 188 times [2021-05-21 20:23:01,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:01,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328784063] [2021-05-21 20:23:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:01,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:01,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328784063] [2021-05-21 20:23:01,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328784063] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:01,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:01,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:01,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329800021] [2021-05-21 20:23:01,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:01,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:01,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:01,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:01,979 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) [2021-05-21 20:23:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:02,040 INFO L93 Difference]: Finished difference Result 3045 states and 11307 transitions. [2021-05-21 20:23:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:02,040 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 [2021-05-21 20:23:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:02,045 INFO L225 Difference]: With dead ends: 3045 [2021-05-21 20:23:02,046 INFO L226 Difference]: Without dead ends: 2846 [2021-05-21 20:23:02,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-05-21 20:23:02,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1460. [2021-05-21 20:23:02,082 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) [2021-05-21 20:23:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5803 transitions. [2021-05-21 20:23:02,084 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5803 transitions. Word has length 25 [2021-05-21 20:23:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:02,084 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5803 transitions. [2021-05-21 20:23:02,084 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) [2021-05-21 20:23:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5803 transitions. [2021-05-21 20:23:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:02,086 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:02,086 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] [2021-05-21 20:23:02,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-05-21 20:23:02,086 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]=== [2021-05-21 20:23:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:02,087 INFO L82 PathProgramCache]: Analyzing trace with hash -764238049, now seen corresponding path program 189 times [2021-05-21 20:23:02,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:02,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160808028] [2021-05-21 20:23:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:02,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:02,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160808028] [2021-05-21 20:23:02,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160808028] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:02,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:02,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:02,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614047969] [2021-05-21 20:23:02,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:02,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:02,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:02,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:02,166 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) [2021-05-21 20:23:02,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:02,230 INFO L93 Difference]: Finished difference Result 3080 states and 11418 transitions. [2021-05-21 20:23:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:02,230 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 [2021-05-21 20:23:02,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:02,235 INFO L225 Difference]: With dead ends: 3080 [2021-05-21 20:23:02,235 INFO L226 Difference]: Without dead ends: 2893 [2021-05-21 20:23:02,235 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 [2021-05-21 20:23:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2021-05-21 20:23:02,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1506. [2021-05-21 20:23:02,273 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) [2021-05-21 20:23:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5960 transitions. [2021-05-21 20:23:02,275 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5960 transitions. Word has length 25 [2021-05-21 20:23:02,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:02,275 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5960 transitions. [2021-05-21 20:23:02,275 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) [2021-05-21 20:23:02,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5960 transitions. [2021-05-21 20:23:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:02,277 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:02,277 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] [2021-05-21 20:23:02,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-05-21 20:23:02,277 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]=== [2021-05-21 20:23:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash 604522399, now seen corresponding path program 190 times [2021-05-21 20:23:02,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:02,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216115304] [2021-05-21 20:23:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:02,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:02,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216115304] [2021-05-21 20:23:02,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216115304] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:02,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:02,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:02,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148233521] [2021-05-21 20:23:02,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:02,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:02,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:02,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:02,372 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) [2021-05-21 20:23:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:02,426 INFO L93 Difference]: Finished difference Result 3115 states and 11507 transitions. [2021-05-21 20:23:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:02,426 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 [2021-05-21 20:23:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:02,431 INFO L225 Difference]: With dead ends: 3115 [2021-05-21 20:23:02,431 INFO L226 Difference]: Without dead ends: 2847 [2021-05-21 20:23:02,431 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 [2021-05-21 20:23:02,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-05-21 20:23:02,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1460. [2021-05-21 20:23:02,467 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) [2021-05-21 20:23:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5783 transitions. [2021-05-21 20:23:02,470 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5783 transitions. Word has length 25 [2021-05-21 20:23:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:02,470 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5783 transitions. [2021-05-21 20:23:02,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5783 transitions. [2021-05-21 20:23:02,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:02,472 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:02,472 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:02,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-05-21 20:23:02,472 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]=== [2021-05-21 20:23:02,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:02,472 INFO L82 PathProgramCache]: Analyzing trace with hash -399980675, now seen corresponding path program 191 times [2021-05-21 20:23:02,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:02,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635514979] [2021-05-21 20:23:02,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:02,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:02,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635514979] [2021-05-21 20:23:02,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635514979] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:02,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:02,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:02,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423791876] [2021-05-21 20:23:02,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:02,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:02,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:02,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:02,592 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) [2021-05-21 20:23:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:02,657 INFO L93 Difference]: Finished difference Result 3050 states and 11295 transitions. [2021-05-21 20:23:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:02,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:02,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:02,663 INFO L225 Difference]: With dead ends: 3050 [2021-05-21 20:23:02,663 INFO L226 Difference]: Without dead ends: 2875 [2021-05-21 20:23:02,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-05-21 20:23:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1500. [2021-05-21 20:23:02,710 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) [2021-05-21 20:23:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5923 transitions. [2021-05-21 20:23:02,713 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5923 transitions. Word has length 25 [2021-05-21 20:23:02,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:02,713 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5923 transitions. [2021-05-21 20:23:02,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5923 transitions. [2021-05-21 20:23:02,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:02,715 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:02,715 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:02,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-05-21 20:23:02,715 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]=== [2021-05-21 20:23:02,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:02,716 INFO L82 PathProgramCache]: Analyzing trace with hash -181629089, now seen corresponding path program 192 times [2021-05-21 20:23:02,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:02,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063528521] [2021-05-21 20:23:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:02,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:02,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063528521] [2021-05-21 20:23:02,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063528521] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:02,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:02,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:02,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427901562] [2021-05-21 20:23:02,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:02,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:02,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:02,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:02,809 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) [2021-05-21 20:23:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:02,864 INFO L93 Difference]: Finished difference Result 3002 states and 11095 transitions. [2021-05-21 20:23:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:02,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:02,869 INFO L225 Difference]: With dead ends: 3002 [2021-05-21 20:23:02,869 INFO L226 Difference]: Without dead ends: 2712 [2021-05-21 20:23:02,869 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 [2021-05-21 20:23:02,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2021-05-21 20:23:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 1432. [2021-05-21 20:23:02,904 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) [2021-05-21 20:23:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5699 transitions. [2021-05-21 20:23:02,907 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5699 transitions. Word has length 25 [2021-05-21 20:23:02,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:02,907 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5699 transitions. [2021-05-21 20:23:02,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5699 transitions. [2021-05-21 20:23:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:02,909 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:02,909 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:02,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-05-21 20:23:02,909 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]=== [2021-05-21 20:23:02,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:02,909 INFO L82 PathProgramCache]: Analyzing trace with hash 498166553, now seen corresponding path program 193 times [2021-05-21 20:23:02,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:02,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491304382] [2021-05-21 20:23:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:02,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:02,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491304382] [2021-05-21 20:23:02,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491304382] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:02,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:02,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:02,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957419107] [2021-05-21 20:23:02,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:02,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:02,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:02,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:02,998 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) [2021-05-21 20:23:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:03,047 INFO L93 Difference]: Finished difference Result 2797 states and 10356 transitions. [2021-05-21 20:23:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:03,048 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 [2021-05-21 20:23:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:03,052 INFO L225 Difference]: With dead ends: 2797 [2021-05-21 20:23:03,052 INFO L226 Difference]: Without dead ends: 2638 [2021-05-21 20:23:03,053 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 [2021-05-21 20:23:03,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-05-21 20:23:03,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 1460. [2021-05-21 20:23:03,088 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) [2021-05-21 20:23:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5803 transitions. [2021-05-21 20:23:03,090 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5803 transitions. Word has length 25 [2021-05-21 20:23:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:03,090 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5803 transitions. [2021-05-21 20:23:03,091 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) [2021-05-21 20:23:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5803 transitions. [2021-05-21 20:23:03,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:03,092 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:03,092 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:03,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-05-21 20:23:03,093 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]=== [2021-05-21 20:23:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:03,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1091768197, now seen corresponding path program 194 times [2021-05-21 20:23:03,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:03,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139130851] [2021-05-21 20:23:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:03,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:03,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139130851] [2021-05-21 20:23:03,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139130851] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:03,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:03,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:03,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483665961] [2021-05-21 20:23:03,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:03,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:03,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:03,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:03,181 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) [2021-05-21 20:23:03,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:03,247 INFO L93 Difference]: Finished difference Result 2827 states and 10449 transitions. [2021-05-21 20:23:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:03,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:03,252 INFO L225 Difference]: With dead ends: 2827 [2021-05-21 20:23:03,252 INFO L226 Difference]: Without dead ends: 2622 [2021-05-21 20:23:03,252 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 [2021-05-21 20:23:03,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2021-05-21 20:23:03,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1444. [2021-05-21 20:23:03,287 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) [2021-05-21 20:23:03,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5747 transitions. [2021-05-21 20:23:03,290 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5747 transitions. Word has length 25 [2021-05-21 20:23:03,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:03,290 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5747 transitions. [2021-05-21 20:23:03,290 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) [2021-05-21 20:23:03,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5747 transitions. [2021-05-21 20:23:03,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:03,292 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:03,292 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] [2021-05-21 20:23:03,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-05-21 20:23:03,292 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]=== [2021-05-21 20:23:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:03,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1579229179, now seen corresponding path program 195 times [2021-05-21 20:23:03,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:03,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684333627] [2021-05-21 20:23:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:03,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:03,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684333627] [2021-05-21 20:23:03,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684333627] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:03,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:03,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:03,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110277593] [2021-05-21 20:23:03,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:03,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:03,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:03,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:03,399 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) [2021-05-21 20:23:03,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:03,467 INFO L93 Difference]: Finished difference Result 2795 states and 10343 transitions. [2021-05-21 20:23:03,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:03,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:03,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:03,474 INFO L225 Difference]: With dead ends: 2795 [2021-05-21 20:23:03,474 INFO L226 Difference]: Without dead ends: 2636 [2021-05-21 20:23:03,474 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2021-05-21 20:23:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 1460. [2021-05-21 20:23:03,524 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) [2021-05-21 20:23:03,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5795 transitions. [2021-05-21 20:23:03,528 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5795 transitions. Word has length 25 [2021-05-21 20:23:03,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:03,528 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5795 transitions. [2021-05-21 20:23:03,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5795 transitions. [2021-05-21 20:23:03,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:03,531 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:03,531 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:03,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-05-21 20:23:03,531 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]=== [2021-05-21 20:23:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:03,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1707440133, now seen corresponding path program 196 times [2021-05-21 20:23:03,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:03,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905029254] [2021-05-21 20:23:03,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:03,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:03,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905029254] [2021-05-21 20:23:03,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905029254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:03,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:03,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:03,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607470782] [2021-05-21 20:23:03,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:03,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:03,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:03,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:03,624 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) [2021-05-21 20:23:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:03,686 INFO L93 Difference]: Finished difference Result 2823 states and 10431 transitions. [2021-05-21 20:23:03,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:03,687 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 [2021-05-21 20:23:03,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:03,691 INFO L225 Difference]: With dead ends: 2823 [2021-05-21 20:23:03,691 INFO L226 Difference]: Without dead ends: 2620 [2021-05-21 20:23:03,692 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:03,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2021-05-21 20:23:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 1444. [2021-05-21 20:23:03,726 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) [2021-05-21 20:23:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5739 transitions. [2021-05-21 20:23:03,729 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5739 transitions. Word has length 25 [2021-05-21 20:23:03,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:03,729 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5739 transitions. [2021-05-21 20:23:03,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:03,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5739 transitions. [2021-05-21 20:23:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:03,731 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:03,731 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] [2021-05-21 20:23:03,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-05-21 20:23:03,731 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]=== [2021-05-21 20:23:03,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:03,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1298576163, now seen corresponding path program 197 times [2021-05-21 20:23:03,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:03,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417748478] [2021-05-21 20:23:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:03,816 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:03,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417748478] [2021-05-21 20:23:03,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417748478] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:03,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:03,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:03,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796778597] [2021-05-21 20:23:03,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:03,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:03,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:03,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:03,817 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) [2021-05-21 20:23:03,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:03,880 INFO L93 Difference]: Finished difference Result 2869 states and 10612 transitions. [2021-05-21 20:23:03,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:03,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:03,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:03,885 INFO L225 Difference]: With dead ends: 2869 [2021-05-21 20:23:03,885 INFO L226 Difference]: Without dead ends: 2680 [2021-05-21 20:23:03,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-05-21 20:23:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1474. [2021-05-21 20:23:03,920 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) [2021-05-21 20:23:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5832 transitions. [2021-05-21 20:23:03,923 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5832 transitions. Word has length 25 [2021-05-21 20:23:03,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:03,923 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5832 transitions. [2021-05-21 20:23:03,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5832 transitions. [2021-05-21 20:23:03,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:03,925 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:03,925 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:03,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-05-21 20:23:03,925 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]=== [2021-05-21 20:23:03,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:03,925 INFO L82 PathProgramCache]: Analyzing trace with hash 953054139, now seen corresponding path program 198 times [2021-05-21 20:23:03,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:03,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830493097] [2021-05-21 20:23:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:04,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:04,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830493097] [2021-05-21 20:23:04,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830493097] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:04,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:04,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:04,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443254505] [2021-05-21 20:23:04,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:04,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:04,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:04,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:04,011 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) [2021-05-21 20:23:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:04,072 INFO L93 Difference]: Finished difference Result 2867 states and 10577 transitions. [2021-05-21 20:23:04,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:04,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:04,078 INFO L225 Difference]: With dead ends: 2867 [2021-05-21 20:23:04,078 INFO L226 Difference]: Without dead ends: 2642 [2021-05-21 20:23:04,078 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 [2021-05-21 20:23:04,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-05-21 20:23:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1436. [2021-05-21 20:23:04,113 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) [2021-05-21 20:23:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5715 transitions. [2021-05-21 20:23:04,116 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5715 transitions. Word has length 25 [2021-05-21 20:23:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:04,116 INFO L482 AbstractCegarLoop]: Abstraction has 1436 states and 5715 transitions. [2021-05-21 20:23:04,116 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) [2021-05-21 20:23:04,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5715 transitions. [2021-05-21 20:23:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:04,117 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:04,118 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] [2021-05-21 20:23:04,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-05-21 20:23:04,118 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]=== [2021-05-21 20:23:04,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:04,118 INFO L82 PathProgramCache]: Analyzing trace with hash -675793157, now seen corresponding path program 199 times [2021-05-21 20:23:04,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:04,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120770664] [2021-05-21 20:23:04,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:04,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:04,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120770664] [2021-05-21 20:23:04,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120770664] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:04,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:04,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:04,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718161623] [2021-05-21 20:23:04,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:04,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:04,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:04,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:04,212 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) [2021-05-21 20:23:04,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:04,263 INFO L93 Difference]: Finished difference Result 2763 states and 10225 transitions. [2021-05-21 20:23:04,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:04,263 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 [2021-05-21 20:23:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:04,268 INFO L225 Difference]: With dead ends: 2763 [2021-05-21 20:23:04,268 INFO L226 Difference]: Without dead ends: 2604 [2021-05-21 20:23:04,268 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 [2021-05-21 20:23:04,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-05-21 20:23:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1460. [2021-05-21 20:23:04,304 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) [2021-05-21 20:23:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5799 transitions. [2021-05-21 20:23:04,306 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5799 transitions. Word has length 25 [2021-05-21 20:23:04,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:04,306 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5799 transitions. [2021-05-21 20:23:04,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:04,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5799 transitions. [2021-05-21 20:23:04,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:04,308 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:04,308 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] [2021-05-21 20:23:04,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-05-21 20:23:04,308 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]=== [2021-05-21 20:23:04,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:04,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2029239389, now seen corresponding path program 200 times [2021-05-21 20:23:04,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:04,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316709295] [2021-05-21 20:23:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:04,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:04,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316709295] [2021-05-21 20:23:04,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316709295] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:04,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:04,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:04,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044989928] [2021-05-21 20:23:04,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:04,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:04,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:04,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:04,400 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) [2021-05-21 20:23:04,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:04,468 INFO L93 Difference]: Finished difference Result 2793 states and 10318 transitions. [2021-05-21 20:23:04,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:04,468 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 [2021-05-21 20:23:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:04,473 INFO L225 Difference]: With dead ends: 2793 [2021-05-21 20:23:04,473 INFO L226 Difference]: Without dead ends: 2588 [2021-05-21 20:23:04,473 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:04,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2021-05-21 20:23:04,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1444. [2021-05-21 20:23:04,508 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) [2021-05-21 20:23:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5743 transitions. [2021-05-21 20:23:04,510 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5743 transitions. Word has length 25 [2021-05-21 20:23:04,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:04,510 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5743 transitions. [2021-05-21 20:23:04,510 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:04,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5743 transitions. [2021-05-21 20:23:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:04,512 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:04,512 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] [2021-05-21 20:23:04,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-05-21 20:23:04,512 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]=== [2021-05-21 20:23:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:04,513 INFO L82 PathProgramCache]: Analyzing trace with hash -626225413, now seen corresponding path program 201 times [2021-05-21 20:23:04,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:04,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725379370] [2021-05-21 20:23:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:04,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:04,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725379370] [2021-05-21 20:23:04,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725379370] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:04,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:04,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:04,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455856275] [2021-05-21 20:23:04,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:04,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:04,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:04,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:04,597 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) [2021-05-21 20:23:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:04,649 INFO L93 Difference]: Finished difference Result 2717 states and 10060 transitions. [2021-05-21 20:23:04,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:04,649 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 [2021-05-21 20:23:04,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:04,654 INFO L225 Difference]: With dead ends: 2717 [2021-05-21 20:23:04,654 INFO L226 Difference]: Without dead ends: 2558 [2021-05-21 20:23:04,654 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 [2021-05-21 20:23:04,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-05-21 20:23:04,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1460. [2021-05-21 20:23:04,699 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) [2021-05-21 20:23:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5791 transitions. [2021-05-21 20:23:04,702 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5791 transitions. Word has length 25 [2021-05-21 20:23:04,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:04,702 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5791 transitions. [2021-05-21 20:23:04,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:04,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5791 transitions. [2021-05-21 20:23:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:04,704 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:04,704 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:04,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-05-21 20:23:04,704 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]=== [2021-05-21 20:23:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:04,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1726469883, now seen corresponding path program 202 times [2021-05-21 20:23:04,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:04,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726449660] [2021-05-21 20:23:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:04,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:04,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726449660] [2021-05-21 20:23:04,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726449660] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:04,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:04,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:04,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166023322] [2021-05-21 20:23:04,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:04,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:04,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:04,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:04,800 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) [2021-05-21 20:23:04,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:04,863 INFO L93 Difference]: Finished difference Result 2605 states and 9723 transitions. [2021-05-21 20:23:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:04,863 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 [2021-05-21 20:23:04,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:04,868 INFO L225 Difference]: With dead ends: 2605 [2021-05-21 20:23:04,868 INFO L226 Difference]: Without dead ends: 2414 [2021-05-21 20:23:04,868 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 [2021-05-21 20:23:04,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2021-05-21 20:23:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 1444. [2021-05-21 20:23:04,901 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) [2021-05-21 20:23:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5735 transitions. [2021-05-21 20:23:04,903 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5735 transitions. Word has length 25 [2021-05-21 20:23:04,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:04,903 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5735 transitions. [2021-05-21 20:23:04,903 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) [2021-05-21 20:23:04,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5735 transitions. [2021-05-21 20:23:04,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:04,905 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:04,905 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] [2021-05-21 20:23:04,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-05-21 20:23:04,906 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]=== [2021-05-21 20:23:04,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:04,906 INFO L82 PathProgramCache]: Analyzing trace with hash 790936541, now seen corresponding path program 203 times [2021-05-21 20:23:04,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:04,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008908760] [2021-05-21 20:23:04,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:04,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:04,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008908760] [2021-05-21 20:23:04,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008908760] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:04,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:04,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:04,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895503029] [2021-05-21 20:23:04,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:04,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:04,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:04,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:04,998 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) [2021-05-21 20:23:05,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:05,062 INFO L93 Difference]: Finished difference Result 2755 states and 10197 transitions. [2021-05-21 20:23:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:05,063 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 [2021-05-21 20:23:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:05,067 INFO L225 Difference]: With dead ends: 2755 [2021-05-21 20:23:05,067 INFO L226 Difference]: Without dead ends: 2566 [2021-05-21 20:23:05,067 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 [2021-05-21 20:23:05,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2021-05-21 20:23:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1468. [2021-05-21 20:23:05,102 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) [2021-05-21 20:23:05,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5811 transitions. [2021-05-21 20:23:05,104 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5811 transitions. Word has length 25 [2021-05-21 20:23:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:05,104 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5811 transitions. [2021-05-21 20:23:05,104 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) [2021-05-21 20:23:05,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5811 transitions. [2021-05-21 20:23:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:05,106 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:05,106 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] [2021-05-21 20:23:05,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-05-21 20:23:05,106 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]=== [2021-05-21 20:23:05,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:05,107 INFO L82 PathProgramCache]: Analyzing trace with hash 49984443, now seen corresponding path program 204 times [2021-05-21 20:23:05,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:05,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235885347] [2021-05-21 20:23:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:05,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:05,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235885347] [2021-05-21 20:23:05,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235885347] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:05,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:05,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:05,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553451492] [2021-05-21 20:23:05,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:05,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:05,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:05,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:05,200 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) [2021-05-21 20:23:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:05,263 INFO L93 Difference]: Finished difference Result 2613 states and 9743 transitions. [2021-05-21 20:23:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:05,263 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 [2021-05-21 20:23:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:05,269 INFO L225 Difference]: With dead ends: 2613 [2021-05-21 20:23:05,269 INFO L226 Difference]: Without dead ends: 2406 [2021-05-21 20:23:05,269 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 [2021-05-21 20:23:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2021-05-21 20:23:05,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 1436. [2021-05-21 20:23:05,311 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) [2021-05-21 20:23:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5711 transitions. [2021-05-21 20:23:05,313 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5711 transitions. Word has length 25 [2021-05-21 20:23:05,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:05,313 INFO L482 AbstractCegarLoop]: Abstraction has 1436 states and 5711 transitions. [2021-05-21 20:23:05,314 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) [2021-05-21 20:23:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5711 transitions. [2021-05-21 20:23:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:05,315 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:05,315 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] [2021-05-21 20:23:05,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-05-21 20:23:05,316 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]=== [2021-05-21 20:23:05,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:05,316 INFO L82 PathProgramCache]: Analyzing trace with hash -287788195, now seen corresponding path program 205 times [2021-05-21 20:23:05,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:05,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857672651] [2021-05-21 20:23:05,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:05,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:05,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857672651] [2021-05-21 20:23:05,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857672651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:05,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:05,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:05,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856188429] [2021-05-21 20:23:05,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:05,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:05,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:05,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:05,401 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) [2021-05-21 20:23:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:05,458 INFO L93 Difference]: Finished difference Result 2759 states and 10211 transitions. [2021-05-21 20:23:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:05,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:05,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:05,463 INFO L225 Difference]: With dead ends: 2759 [2021-05-21 20:23:05,463 INFO L226 Difference]: Without dead ends: 2600 [2021-05-21 20:23:05,463 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 [2021-05-21 20:23:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-05-21 20:23:05,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1460. [2021-05-21 20:23:05,498 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) [2021-05-21 20:23:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5795 transitions. [2021-05-21 20:23:05,501 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5795 transitions. Word has length 25 [2021-05-21 20:23:05,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:05,501 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5795 transitions. [2021-05-21 20:23:05,501 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) [2021-05-21 20:23:05,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5795 transitions. [2021-05-21 20:23:05,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:05,503 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:05,503 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:05,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-05-21 20:23:05,503 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]=== [2021-05-21 20:23:05,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:05,504 INFO L82 PathProgramCache]: Analyzing trace with hash 720509789, now seen corresponding path program 206 times [2021-05-21 20:23:05,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:05,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232762806] [2021-05-21 20:23:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:05,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:05,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232762806] [2021-05-21 20:23:05,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232762806] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:05,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:05,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:05,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860670836] [2021-05-21 20:23:05,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:05,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:05,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:05,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:05,587 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) [2021-05-21 20:23:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:05,650 INFO L93 Difference]: Finished difference Result 2787 states and 10299 transitions. [2021-05-21 20:23:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:05,650 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 [2021-05-21 20:23:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:05,655 INFO L225 Difference]: With dead ends: 2787 [2021-05-21 20:23:05,655 INFO L226 Difference]: Without dead ends: 2584 [2021-05-21 20:23:05,655 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 [2021-05-21 20:23:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2021-05-21 20:23:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1444. [2021-05-21 20:23:05,690 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) [2021-05-21 20:23:05,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5739 transitions. [2021-05-21 20:23:05,692 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5739 transitions. Word has length 25 [2021-05-21 20:23:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:05,692 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5739 transitions. [2021-05-21 20:23:05,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5739 transitions. [2021-05-21 20:23:05,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:05,694 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:05,694 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:05,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-05-21 20:23:05,694 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]=== [2021-05-21 20:23:05,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:05,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1891099451, now seen corresponding path program 207 times [2021-05-21 20:23:05,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:05,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964582217] [2021-05-21 20:23:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:05,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:05,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964582217] [2021-05-21 20:23:05,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964582217] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:05,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:05,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:05,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974087997] [2021-05-21 20:23:05,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:05,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:05,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:05,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:05,771 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) [2021-05-21 20:23:05,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:05,822 INFO L93 Difference]: Finished difference Result 2715 states and 10051 transitions. [2021-05-21 20:23:05,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:05,822 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 [2021-05-21 20:23:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:05,827 INFO L225 Difference]: With dead ends: 2715 [2021-05-21 20:23:05,827 INFO L226 Difference]: Without dead ends: 2556 [2021-05-21 20:23:05,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:05,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-05-21 20:23:05,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 1460. [2021-05-21 20:23:05,861 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) [2021-05-21 20:23:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5787 transitions. [2021-05-21 20:23:05,864 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5787 transitions. Word has length 25 [2021-05-21 20:23:05,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:05,864 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5787 transitions. [2021-05-21 20:23:05,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5787 transitions. [2021-05-21 20:23:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:05,866 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:05,866 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] [2021-05-21 20:23:05,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-05-21 20:23:05,866 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]=== [2021-05-21 20:23:05,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:05,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1245567837, now seen corresponding path program 208 times [2021-05-21 20:23:05,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:05,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826326991] [2021-05-21 20:23:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:05,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:05,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826326991] [2021-05-21 20:23:05,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826326991] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:05,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:05,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:05,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907980748] [2021-05-21 20:23:05,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:05,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:05,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:05,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:05,943 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) [2021-05-21 20:23:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:06,010 INFO L93 Difference]: Finished difference Result 2603 states and 9714 transitions. [2021-05-21 20:23:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:06,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:06,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:06,015 INFO L225 Difference]: With dead ends: 2603 [2021-05-21 20:23:06,015 INFO L226 Difference]: Without dead ends: 2412 [2021-05-21 20:23:06,015 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 [2021-05-21 20:23:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-05-21 20:23:06,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1444. [2021-05-21 20:23:06,049 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) [2021-05-21 20:23:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5731 transitions. [2021-05-21 20:23:06,051 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5731 transitions. Word has length 25 [2021-05-21 20:23:06,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:06,051 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5731 transitions. [2021-05-21 20:23:06,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:06,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5731 transitions. [2021-05-21 20:23:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:06,053 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:06,053 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:06,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-05-21 20:23:06,054 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]=== [2021-05-21 20:23:06,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:06,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1787075747, now seen corresponding path program 209 times [2021-05-21 20:23:06,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:06,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100049937] [2021-05-21 20:23:06,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:06,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:06,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100049937] [2021-05-21 20:23:06,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100049937] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:06,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:06,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:06,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618241045] [2021-05-21 20:23:06,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:06,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:06,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:06,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:06,136 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) [2021-05-21 20:23:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:06,200 INFO L93 Difference]: Finished difference Result 2751 states and 10183 transitions. [2021-05-21 20:23:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:06,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:06,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:06,205 INFO L225 Difference]: With dead ends: 2751 [2021-05-21 20:23:06,205 INFO L226 Difference]: Without dead ends: 2564 [2021-05-21 20:23:06,206 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 [2021-05-21 20:23:06,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2021-05-21 20:23:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1468. [2021-05-21 20:23:06,240 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) [2021-05-21 20:23:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5807 transitions. [2021-05-21 20:23:06,243 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5807 transitions. Word has length 25 [2021-05-21 20:23:06,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:06,243 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5807 transitions. [2021-05-21 20:23:06,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:06,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5807 transitions. [2021-05-21 20:23:06,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:06,245 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:06,245 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:06,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-05-21 20:23:06,245 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]=== [2021-05-21 20:23:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:06,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1115747003, now seen corresponding path program 210 times [2021-05-21 20:23:06,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:06,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387327648] [2021-05-21 20:23:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:06,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:06,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387327648] [2021-05-21 20:23:06,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387327648] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:06,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:06,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:06,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134420404] [2021-05-21 20:23:06,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:06,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:06,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:06,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:06,321 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) [2021-05-21 20:23:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:06,395 INFO L93 Difference]: Finished difference Result 2611 states and 9734 transitions. [2021-05-21 20:23:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:06,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:06,400 INFO L225 Difference]: With dead ends: 2611 [2021-05-21 20:23:06,400 INFO L226 Difference]: Without dead ends: 2404 [2021-05-21 20:23:06,400 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 [2021-05-21 20:23:06,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2021-05-21 20:23:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1436. [2021-05-21 20:23:06,433 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) [2021-05-21 20:23:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5707 transitions. [2021-05-21 20:23:06,436 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5707 transitions. Word has length 25 [2021-05-21 20:23:06,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:06,436 INFO L482 AbstractCegarLoop]: Abstraction has 1436 states and 5707 transitions. [2021-05-21 20:23:06,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5707 transitions. [2021-05-21 20:23:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:06,438 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:06,438 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:06,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-05-21 20:23:06,438 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]=== [2021-05-21 20:23:06,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:06,438 INFO L82 PathProgramCache]: Analyzing trace with hash 436316095, now seen corresponding path program 211 times [2021-05-21 20:23:06,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:06,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593231161] [2021-05-21 20:23:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:06,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:06,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593231161] [2021-05-21 20:23:06,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593231161] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:06,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:06,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:06,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615931164] [2021-05-21 20:23:06,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:06,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:06,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:06,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:06,517 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) [2021-05-21 20:23:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:06,577 INFO L93 Difference]: Finished difference Result 2875 states and 10649 transitions. [2021-05-21 20:23:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:06,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:06,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:06,583 INFO L225 Difference]: With dead ends: 2875 [2021-05-21 20:23:06,583 INFO L226 Difference]: Without dead ends: 2686 [2021-05-21 20:23:06,583 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 [2021-05-21 20:23:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-05-21 20:23:06,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1478. [2021-05-21 20:23:06,630 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) [2021-05-21 20:23:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5856 transitions. [2021-05-21 20:23:06,633 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5856 transitions. Word has length 25 [2021-05-21 20:23:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:06,633 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5856 transitions. [2021-05-21 20:23:06,633 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) [2021-05-21 20:23:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5856 transitions. [2021-05-21 20:23:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:06,635 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:06,635 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:06,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-05-21 20:23:06,635 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]=== [2021-05-21 20:23:06,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:06,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1607020899, now seen corresponding path program 212 times [2021-05-21 20:23:06,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:06,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031038537] [2021-05-21 20:23:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:06,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:06,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031038537] [2021-05-21 20:23:06,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031038537] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:06,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:06,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:06,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269597715] [2021-05-21 20:23:06,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:06,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:06,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:06,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:06,728 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) [2021-05-21 20:23:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:06,787 INFO L93 Difference]: Finished difference Result 2873 states and 10614 transitions. [2021-05-21 20:23:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:06,787 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 [2021-05-21 20:23:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:06,792 INFO L225 Difference]: With dead ends: 2873 [2021-05-21 20:23:06,792 INFO L226 Difference]: Without dead ends: 2656 [2021-05-21 20:23:06,792 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 [2021-05-21 20:23:06,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2021-05-21 20:23:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 1448. [2021-05-21 20:23:06,827 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) [2021-05-21 20:23:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5751 transitions. [2021-05-21 20:23:06,830 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5751 transitions. Word has length 25 [2021-05-21 20:23:06,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:06,830 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5751 transitions. [2021-05-21 20:23:06,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:06,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5751 transitions. [2021-05-21 20:23:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:06,832 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:06,832 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] [2021-05-21 20:23:06,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-05-21 20:23:06,832 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]=== [2021-05-21 20:23:06,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:06,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1679763555, now seen corresponding path program 213 times [2021-05-21 20:23:06,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:06,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309158094] [2021-05-21 20:23:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:06,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:06,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309158094] [2021-05-21 20:23:06,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309158094] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:06,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:06,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:06,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336148519] [2021-05-21 20:23:06,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:06,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:06,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:06,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:06,917 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) [2021-05-21 20:23:06,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:06,978 INFO L93 Difference]: Finished difference Result 2795 states and 10353 transitions. [2021-05-21 20:23:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:06,978 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 [2021-05-21 20:23:06,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:06,983 INFO L225 Difference]: With dead ends: 2795 [2021-05-21 20:23:06,983 INFO L226 Difference]: Without dead ends: 2606 [2021-05-21 20:23:06,983 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 [2021-05-21 20:23:07,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-05-21 20:23:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1472. [2021-05-21 20:23:07,026 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) [2021-05-21 20:23:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5827 transitions. [2021-05-21 20:23:07,030 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5827 transitions. Word has length 25 [2021-05-21 20:23:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:07,030 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5827 transitions. [2021-05-21 20:23:07,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5827 transitions. [2021-05-21 20:23:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:07,033 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:07,033 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:07,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-05-21 20:23:07,033 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]=== [2021-05-21 20:23:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:07,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1123975267, now seen corresponding path program 214 times [2021-05-21 20:23:07,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:07,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300640782] [2021-05-21 20:23:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:07,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:07,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300640782] [2021-05-21 20:23:07,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300640782] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:07,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:07,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:07,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418241439] [2021-05-21 20:23:07,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:07,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:07,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:07,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:07,125 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) [2021-05-21 20:23:07,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:07,184 INFO L93 Difference]: Finished difference Result 2653 states and 9899 transitions. [2021-05-21 20:23:07,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:07,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:07,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:07,189 INFO L225 Difference]: With dead ends: 2653 [2021-05-21 20:23:07,189 INFO L226 Difference]: Without dead ends: 2454 [2021-05-21 20:23:07,189 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 [2021-05-21 20:23:07,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2021-05-21 20:23:07,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 1448. [2021-05-21 20:23:07,223 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) [2021-05-21 20:23:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5739 transitions. [2021-05-21 20:23:07,225 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5739 transitions. Word has length 25 [2021-05-21 20:23:07,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:07,225 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5739 transitions. [2021-05-21 20:23:07,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:07,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5739 transitions. [2021-05-21 20:23:07,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:07,227 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:07,227 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] [2021-05-21 20:23:07,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-05-21 20:23:07,228 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]=== [2021-05-21 20:23:07,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:07,228 INFO L82 PathProgramCache]: Analyzing trace with hash -697415941, now seen corresponding path program 215 times [2021-05-21 20:23:07,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:07,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581828225] [2021-05-21 20:23:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:07,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:07,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581828225] [2021-05-21 20:23:07,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581828225] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:07,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:07,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:07,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067909392] [2021-05-21 20:23:07,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:07,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:07,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:07,302 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) [2021-05-21 20:23:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:07,363 INFO L93 Difference]: Finished difference Result 2793 states and 10336 transitions. [2021-05-21 20:23:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:07,363 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 [2021-05-21 20:23:07,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:07,368 INFO L225 Difference]: With dead ends: 2793 [2021-05-21 20:23:07,368 INFO L226 Difference]: Without dead ends: 2606 [2021-05-21 20:23:07,368 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:07,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-05-21 20:23:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1472. [2021-05-21 20:23:07,403 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) [2021-05-21 20:23:07,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5815 transitions. [2021-05-21 20:23:07,405 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5815 transitions. Word has length 25 [2021-05-21 20:23:07,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:07,405 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5815 transitions. [2021-05-21 20:23:07,406 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) [2021-05-21 20:23:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5815 transitions. [2021-05-21 20:23:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:07,407 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:07,407 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:07,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-05-21 20:23:07,408 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]=== [2021-05-21 20:23:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:07,408 INFO L82 PathProgramCache]: Analyzing trace with hash -904223907, now seen corresponding path program 216 times [2021-05-21 20:23:07,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:07,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946387324] [2021-05-21 20:23:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:07,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:07,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946387324] [2021-05-21 20:23:07,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946387324] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:07,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:07,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:07,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132102268] [2021-05-21 20:23:07,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:07,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:07,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:07,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:07,497 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) [2021-05-21 20:23:07,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:07,579 INFO L93 Difference]: Finished difference Result 2653 states and 9887 transitions. [2021-05-21 20:23:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:07,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:07,585 INFO L225 Difference]: With dead ends: 2653 [2021-05-21 20:23:07,585 INFO L226 Difference]: Without dead ends: 2438 [2021-05-21 20:23:07,586 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:07,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-05-21 20:23:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1432. [2021-05-21 20:23:07,634 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) [2021-05-21 20:23:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5697 transitions. [2021-05-21 20:23:07,638 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5697 transitions. Word has length 25 [2021-05-21 20:23:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:07,638 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5697 transitions. [2021-05-21 20:23:07,638 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) [2021-05-21 20:23:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5697 transitions. [2021-05-21 20:23:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:07,641 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:07,641 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] [2021-05-21 20:23:07,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-05-21 20:23:07,641 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]=== [2021-05-21 20:23:07,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:07,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1532080991, now seen corresponding path program 217 times [2021-05-21 20:23:07,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:07,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535531409] [2021-05-21 20:23:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:07,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:07,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535531409] [2021-05-21 20:23:07,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535531409] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:07,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:07,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:07,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004965835] [2021-05-21 20:23:07,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:07,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:07,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:07,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:07,726 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) [2021-05-21 20:23:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:07,786 INFO L93 Difference]: Finished difference Result 3154 states and 11754 transitions. [2021-05-21 20:23:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:07,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:07,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:07,791 INFO L225 Difference]: With dead ends: 3154 [2021-05-21 20:23:07,792 INFO L226 Difference]: Without dead ends: 2965 [2021-05-21 20:23:07,792 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 [2021-05-21 20:23:07,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2021-05-21 20:23:07,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1492. [2021-05-21 20:23:07,829 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) [2021-05-21 20:23:07,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5925 transitions. [2021-05-21 20:23:07,832 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5925 transitions. Word has length 25 [2021-05-21 20:23:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:07,832 INFO L482 AbstractCegarLoop]: Abstraction has 1492 states and 5925 transitions. [2021-05-21 20:23:07,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5925 transitions. [2021-05-21 20:23:07,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:07,834 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:07,834 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] [2021-05-21 20:23:07,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-05-21 20:23:07,834 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]=== [2021-05-21 20:23:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:07,835 INFO L82 PathProgramCache]: Analyzing trace with hash 719549311, now seen corresponding path program 218 times [2021-05-21 20:23:07,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:07,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012442683] [2021-05-21 20:23:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:07,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:07,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012442683] [2021-05-21 20:23:07,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012442683] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:07,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:07,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:07,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419530190] [2021-05-21 20:23:07,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:07,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:07,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:07,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:07,910 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) [2021-05-21 20:23:07,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:07,973 INFO L93 Difference]: Finished difference Result 3152 states and 11719 transitions. [2021-05-21 20:23:07,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:07,974 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 [2021-05-21 20:23:07,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:07,979 INFO L225 Difference]: With dead ends: 3152 [2021-05-21 20:23:07,979 INFO L226 Difference]: Without dead ends: 2935 [2021-05-21 20:23:07,979 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 [2021-05-21 20:23:07,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2021-05-21 20:23:08,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1462. [2021-05-21 20:23:08,016 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) [2021-05-21 20:23:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5820 transitions. [2021-05-21 20:23:08,019 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5820 transitions. Word has length 25 [2021-05-21 20:23:08,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:08,019 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5820 transitions. [2021-05-21 20:23:08,019 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) [2021-05-21 20:23:08,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5820 transitions. [2021-05-21 20:23:08,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:08,021 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:08,021 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:08,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-05-21 20:23:08,021 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]=== [2021-05-21 20:23:08,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:08,021 INFO L82 PathProgramCache]: Analyzing trace with hash 646806655, now seen corresponding path program 219 times [2021-05-21 20:23:08,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:08,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965964730] [2021-05-21 20:23:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:08,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:08,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965964730] [2021-05-21 20:23:08,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965964730] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:08,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:08,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:08,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923098180] [2021-05-21 20:23:08,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:08,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:08,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:08,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:08,107 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) [2021-05-21 20:23:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:08,168 INFO L93 Difference]: Finished difference Result 3136 states and 11679 transitions. [2021-05-21 20:23:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:08,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:08,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:08,173 INFO L225 Difference]: With dead ends: 3136 [2021-05-21 20:23:08,173 INFO L226 Difference]: Without dead ends: 2947 [2021-05-21 20:23:08,174 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 [2021-05-21 20:23:08,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2021-05-21 20:23:08,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1486. [2021-05-21 20:23:08,211 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) [2021-05-21 20:23:08,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5896 transitions. [2021-05-21 20:23:08,214 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5896 transitions. Word has length 25 [2021-05-21 20:23:08,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:08,214 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5896 transitions. [2021-05-21 20:23:08,214 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) [2021-05-21 20:23:08,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5896 transitions. [2021-05-21 20:23:08,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:08,216 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:08,216 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] [2021-05-21 20:23:08,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-05-21 20:23:08,216 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]=== [2021-05-21 20:23:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:08,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1202594943, now seen corresponding path program 220 times [2021-05-21 20:23:08,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:08,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188290335] [2021-05-21 20:23:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:08,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:08,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188290335] [2021-05-21 20:23:08,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188290335] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:08,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:08,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:08,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361363349] [2021-05-21 20:23:08,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:08,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:08,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:08,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:08,303 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) [2021-05-21 20:23:08,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:08,364 INFO L93 Difference]: Finished difference Result 3122 states and 11610 transitions. [2021-05-21 20:23:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:08,365 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 [2021-05-21 20:23:08,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:08,370 INFO L225 Difference]: With dead ends: 3122 [2021-05-21 20:23:08,370 INFO L226 Difference]: Without dead ends: 2923 [2021-05-21 20:23:08,370 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 [2021-05-21 20:23:08,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2021-05-21 20:23:08,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1462. [2021-05-21 20:23:08,409 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) [2021-05-21 20:23:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5808 transitions. [2021-05-21 20:23:08,412 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5808 transitions. Word has length 25 [2021-05-21 20:23:08,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:08,412 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5808 transitions. [2021-05-21 20:23:08,412 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) [2021-05-21 20:23:08,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5808 transitions. [2021-05-21 20:23:08,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:08,414 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:08,414 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] [2021-05-21 20:23:08,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-05-21 20:23:08,414 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]=== [2021-05-21 20:23:08,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:08,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1629154269, now seen corresponding path program 221 times [2021-05-21 20:23:08,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:08,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588194395] [2021-05-21 20:23:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:08,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:08,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588194395] [2021-05-21 20:23:08,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588194395] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:08,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:08,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:08,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962140629] [2021-05-21 20:23:08,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:08,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:08,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:08,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:08,489 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) [2021-05-21 20:23:08,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:08,551 INFO L93 Difference]: Finished difference Result 3132 states and 11657 transitions. [2021-05-21 20:23:08,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:08,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:08,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:08,557 INFO L225 Difference]: With dead ends: 3132 [2021-05-21 20:23:08,557 INFO L226 Difference]: Without dead ends: 2945 [2021-05-21 20:23:08,557 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 [2021-05-21 20:23:08,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2021-05-21 20:23:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1486. [2021-05-21 20:23:08,622 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) [2021-05-21 20:23:08,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5884 transitions. [2021-05-21 20:23:08,624 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5884 transitions. Word has length 25 [2021-05-21 20:23:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:08,625 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5884 transitions. [2021-05-21 20:23:08,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5884 transitions. [2021-05-21 20:23:08,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:08,626 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:08,626 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:08,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-05-21 20:23:08,627 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]=== [2021-05-21 20:23:08,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:08,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1422346303, now seen corresponding path program 222 times [2021-05-21 20:23:08,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:08,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289961709] [2021-05-21 20:23:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:08,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:08,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289961709] [2021-05-21 20:23:08,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289961709] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:08,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:08,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:08,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695426763] [2021-05-21 20:23:08,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:08,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:08,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:08,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:08,701 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) [2021-05-21 20:23:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:08,764 INFO L93 Difference]: Finished difference Result 3120 states and 11593 transitions. [2021-05-21 20:23:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:08,765 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 [2021-05-21 20:23:08,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:08,771 INFO L225 Difference]: With dead ends: 3120 [2021-05-21 20:23:08,772 INFO L226 Difference]: Without dead ends: 2909 [2021-05-21 20:23:08,772 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 [2021-05-21 20:23:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2021-05-21 20:23:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 1450. [2021-05-21 20:23:08,824 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) [2021-05-21 20:23:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5770 transitions. [2021-05-21 20:23:08,828 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5770 transitions. Word has length 25 [2021-05-21 20:23:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:08,828 INFO L482 AbstractCegarLoop]: Abstraction has 1450 states and 5770 transitions. [2021-05-21 20:23:08,828 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) [2021-05-21 20:23:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5770 transitions. [2021-05-21 20:23:08,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:08,831 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:08,831 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:08,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-05-21 20:23:08,831 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]=== [2021-05-21 20:23:08,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:08,831 INFO L82 PathProgramCache]: Analyzing trace with hash 799531391, now seen corresponding path program 223 times [2021-05-21 20:23:08,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:08,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916033528] [2021-05-21 20:23:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:08,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:08,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916033528] [2021-05-21 20:23:08,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916033528] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:08,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:08,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:08,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454398323] [2021-05-21 20:23:08,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:08,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:08,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:08,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:08,911 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) [2021-05-21 20:23:08,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:08,976 INFO L93 Difference]: Finished difference Result 3250 states and 12076 transitions. [2021-05-21 20:23:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:08,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:08,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:08,982 INFO L225 Difference]: With dead ends: 3250 [2021-05-21 20:23:08,982 INFO L226 Difference]: Without dead ends: 3061 [2021-05-21 20:23:08,982 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 [2021-05-21 20:23:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2021-05-21 20:23:09,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 1519. [2021-05-21 20:23:09,021 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) [2021-05-21 20:23:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 6016 transitions. [2021-05-21 20:23:09,023 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 6016 transitions. Word has length 25 [2021-05-21 20:23:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:09,024 INFO L482 AbstractCegarLoop]: Abstraction has 1519 states and 6016 transitions. [2021-05-21 20:23:09,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 6016 transitions. [2021-05-21 20:23:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:09,026 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:09,026 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:09,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-05-21 20:23:09,026 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]=== [2021-05-21 20:23:09,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:09,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1243805603, now seen corresponding path program 224 times [2021-05-21 20:23:09,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:09,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105217093] [2021-05-21 20:23:09,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:09,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:09,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105217093] [2021-05-21 20:23:09,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105217093] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:09,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:09,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:09,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380594337] [2021-05-21 20:23:09,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:09,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:09,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:09,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:09,102 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) [2021-05-21 20:23:09,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:09,164 INFO L93 Difference]: Finished difference Result 3248 states and 12041 transitions. [2021-05-21 20:23:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:09,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:09,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:09,169 INFO L225 Difference]: With dead ends: 3248 [2021-05-21 20:23:09,169 INFO L226 Difference]: Without dead ends: 3031 [2021-05-21 20:23:09,170 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 [2021-05-21 20:23:09,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2021-05-21 20:23:09,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1489. [2021-05-21 20:23:09,207 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) [2021-05-21 20:23:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 5908 transitions. [2021-05-21 20:23:09,209 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 5908 transitions. Word has length 25 [2021-05-21 20:23:09,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:09,210 INFO L482 AbstractCegarLoop]: Abstraction has 1489 states and 5908 transitions. [2021-05-21 20:23:09,210 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) [2021-05-21 20:23:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 5908 transitions. [2021-05-21 20:23:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:09,211 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:09,212 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] [2021-05-21 20:23:09,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-05-21 20:23:09,212 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]=== [2021-05-21 20:23:09,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:09,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1918329343, now seen corresponding path program 225 times [2021-05-21 20:23:09,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:09,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219625911] [2021-05-21 20:23:09,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:09,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:09,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219625911] [2021-05-21 20:23:09,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219625911] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:09,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:09,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:09,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304802702] [2021-05-21 20:23:09,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:09,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:09,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:09,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:09,291 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) [2021-05-21 20:23:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:09,370 INFO L93 Difference]: Finished difference Result 3318 states and 12295 transitions. [2021-05-21 20:23:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:09,371 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 [2021-05-21 20:23:09,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:09,377 INFO L225 Difference]: With dead ends: 3318 [2021-05-21 20:23:09,377 INFO L226 Difference]: Without dead ends: 3129 [2021-05-21 20:23:09,377 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 [2021-05-21 20:23:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2021-05-21 20:23:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 1552. [2021-05-21 20:23:09,416 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) [2021-05-21 20:23:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 6115 transitions. [2021-05-21 20:23:09,419 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 6115 transitions. Word has length 25 [2021-05-21 20:23:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:09,419 INFO L482 AbstractCegarLoop]: Abstraction has 1552 states and 6115 transitions. [2021-05-21 20:23:09,419 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) [2021-05-21 20:23:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 6115 transitions. [2021-05-21 20:23:09,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:09,421 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:09,421 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:09,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-05-21 20:23:09,421 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]=== [2021-05-21 20:23:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:09,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1362541055, now seen corresponding path program 226 times [2021-05-21 20:23:09,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:09,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497468372] [2021-05-21 20:23:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:09,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:09,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497468372] [2021-05-21 20:23:09,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497468372] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:09,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:09,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:09,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926231248] [2021-05-21 20:23:09,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:09,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:09,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:09,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:09,498 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) [2021-05-21 20:23:09,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:09,551 INFO L93 Difference]: Finished difference Result 3351 states and 12378 transitions. [2021-05-21 20:23:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:09,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:09,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:09,557 INFO L225 Difference]: With dead ends: 3351 [2021-05-21 20:23:09,557 INFO L226 Difference]: Without dead ends: 3066 [2021-05-21 20:23:09,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-05-21 20:23:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 1489. [2021-05-21 20:23:09,596 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) [2021-05-21 20:23:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 5877 transitions. [2021-05-21 20:23:09,598 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 5877 transitions. Word has length 25 [2021-05-21 20:23:09,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:09,598 INFO L482 AbstractCegarLoop]: Abstraction has 1489 states and 5877 transitions. [2021-05-21 20:23:09,598 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) [2021-05-21 20:23:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 5877 transitions. [2021-05-21 20:23:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:09,600 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:09,600 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] [2021-05-21 20:23:09,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-05-21 20:23:09,601 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]=== [2021-05-21 20:23:09,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:09,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1394290339, now seen corresponding path program 227 times [2021-05-21 20:23:09,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:09,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912526370] [2021-05-21 20:23:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:09,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:09,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912526370] [2021-05-21 20:23:09,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912526370] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:09,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:09,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:09,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097469369] [2021-05-21 20:23:09,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:09,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:09,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:09,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:09,676 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) [2021-05-21 20:23:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:09,737 INFO L93 Difference]: Finished difference Result 3297 states and 12203 transitions. [2021-05-21 20:23:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:09,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:09,743 INFO L225 Difference]: With dead ends: 3297 [2021-05-21 20:23:09,743 INFO L226 Difference]: Without dead ends: 3110 [2021-05-21 20:23:09,744 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 [2021-05-21 20:23:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2021-05-21 20:23:09,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 1535. [2021-05-21 20:23:09,782 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) [2021-05-21 20:23:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6034 transitions. [2021-05-21 20:23:09,785 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6034 transitions. Word has length 25 [2021-05-21 20:23:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:09,785 INFO L482 AbstractCegarLoop]: Abstraction has 1535 states and 6034 transitions. [2021-05-21 20:23:09,785 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) [2021-05-21 20:23:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6034 transitions. [2021-05-21 20:23:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:09,787 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:09,787 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] [2021-05-21 20:23:09,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-05-21 20:23:09,787 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]=== [2021-05-21 20:23:09,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:09,787 INFO L82 PathProgramCache]: Analyzing trace with hash 543287359, now seen corresponding path program 228 times [2021-05-21 20:23:09,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:09,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58412523] [2021-05-21 20:23:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:09,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:09,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58412523] [2021-05-21 20:23:09,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58412523] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:09,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:09,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:09,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516157353] [2021-05-21 20:23:09,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:09,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:09,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:09,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:09,864 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) [2021-05-21 20:23:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:09,916 INFO L93 Difference]: Finished difference Result 3332 states and 12292 transitions. [2021-05-21 20:23:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:09,917 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 [2021-05-21 20:23:09,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:09,922 INFO L225 Difference]: With dead ends: 3332 [2021-05-21 20:23:09,922 INFO L226 Difference]: Without dead ends: 3025 [2021-05-21 20:23:09,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:09,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2021-05-21 20:23:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 1450. [2021-05-21 20:23:09,960 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) [2021-05-21 20:23:09,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5752 transitions. [2021-05-21 20:23:09,962 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5752 transitions. Word has length 25 [2021-05-21 20:23:09,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:09,962 INFO L482 AbstractCegarLoop]: Abstraction has 1450 states and 5752 transitions. [2021-05-21 20:23:09,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:09,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5752 transitions. [2021-05-21 20:23:09,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:09,964 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:09,964 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:09,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-05-21 20:23:09,964 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]=== [2021-05-21 20:23:09,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:09,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1336450467, now seen corresponding path program 229 times [2021-05-21 20:23:09,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:09,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117336406] [2021-05-21 20:23:09,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:10,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:10,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:10,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117336406] [2021-05-21 20:23:10,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117336406] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:10,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:10,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:10,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536954586] [2021-05-21 20:23:10,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:10,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:10,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:10,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:10,059 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) [2021-05-21 20:23:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:10,124 INFO L93 Difference]: Finished difference Result 3197 states and 11876 transitions. [2021-05-21 20:23:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:10,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:10,130 INFO L225 Difference]: With dead ends: 3197 [2021-05-21 20:23:10,130 INFO L226 Difference]: Without dead ends: 3008 [2021-05-21 20:23:10,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:10,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-05-21 20:23:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1502. [2021-05-21 20:23:10,168 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) [2021-05-21 20:23:10,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5948 transitions. [2021-05-21 20:23:10,171 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5948 transitions. Word has length 25 [2021-05-21 20:23:10,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:10,171 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 5948 transitions. [2021-05-21 20:23:10,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:10,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5948 transitions. [2021-05-21 20:23:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:10,173 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:10,173 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:10,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-05-21 20:23:10,173 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]=== [2021-05-21 20:23:10,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:10,174 INFO L82 PathProgramCache]: Analyzing trace with hash -780662179, now seen corresponding path program 230 times [2021-05-21 20:23:10,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:10,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804298482] [2021-05-21 20:23:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:10,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:10,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804298482] [2021-05-21 20:23:10,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804298482] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:10,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:10,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:10,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351266472] [2021-05-21 20:23:10,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:10,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:10,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:10,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:10,269 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) [2021-05-21 20:23:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:10,333 INFO L93 Difference]: Finished difference Result 3183 states and 11807 transitions. [2021-05-21 20:23:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:10,333 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 [2021-05-21 20:23:10,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:10,339 INFO L225 Difference]: With dead ends: 3183 [2021-05-21 20:23:10,339 INFO L226 Difference]: Without dead ends: 2984 [2021-05-21 20:23:10,339 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 [2021-05-21 20:23:10,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2021-05-21 20:23:10,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1478. [2021-05-21 20:23:10,376 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) [2021-05-21 20:23:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5860 transitions. [2021-05-21 20:23:10,378 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5860 transitions. Word has length 25 [2021-05-21 20:23:10,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:10,379 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5860 transitions. [2021-05-21 20:23:10,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:10,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5860 transitions. [2021-05-21 20:23:10,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:10,380 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:10,381 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:10,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-05-21 20:23:10,381 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]=== [2021-05-21 20:23:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:10,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1953973825, now seen corresponding path program 231 times [2021-05-21 20:23:10,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:10,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602613643] [2021-05-21 20:23:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:10,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:10,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602613643] [2021-05-21 20:23:10,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602613643] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:10,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:10,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:10,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244823860] [2021-05-21 20:23:10,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:10,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:10,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:10,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:10,479 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) [2021-05-21 20:23:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:10,570 INFO L93 Difference]: Finished difference Result 3220 states and 11923 transitions. [2021-05-21 20:23:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:10,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:10,576 INFO L225 Difference]: With dead ends: 3220 [2021-05-21 20:23:10,576 INFO L226 Difference]: Without dead ends: 3031 [2021-05-21 20:23:10,576 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 [2021-05-21 20:23:10,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2021-05-21 20:23:10,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1541. [2021-05-21 20:23:10,614 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) [2021-05-21 20:23:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 6067 transitions. [2021-05-21 20:23:10,617 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 6067 transitions. Word has length 25 [2021-05-21 20:23:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:10,617 INFO L482 AbstractCegarLoop]: Abstraction has 1541 states and 6067 transitions. [2021-05-21 20:23:10,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 6067 transitions. [2021-05-21 20:23:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:10,619 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:10,619 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:10,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-05-21 20:23:10,619 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]=== [2021-05-21 20:23:10,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:10,619 INFO L82 PathProgramCache]: Analyzing trace with hash -670471587, now seen corresponding path program 232 times [2021-05-21 20:23:10,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:10,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953446831] [2021-05-21 20:23:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:10,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:10,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953446831] [2021-05-21 20:23:10,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953446831] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:10,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:10,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:10,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679963634] [2021-05-21 20:23:10,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:10,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:10,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:10,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:10,711 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) [2021-05-21 20:23:10,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:10,768 INFO L93 Difference]: Finished difference Result 3253 states and 12006 transitions. [2021-05-21 20:23:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:10,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:10,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:10,774 INFO L225 Difference]: With dead ends: 3253 [2021-05-21 20:23:10,774 INFO L226 Difference]: Without dead ends: 2968 [2021-05-21 20:23:10,774 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 [2021-05-21 20:23:10,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2021-05-21 20:23:10,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1478. [2021-05-21 20:23:10,811 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) [2021-05-21 20:23:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5832 transitions. [2021-05-21 20:23:10,813 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5832 transitions. Word has length 25 [2021-05-21 20:23:10,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:10,813 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5832 transitions. [2021-05-21 20:23:10,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:10,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5832 transitions. [2021-05-21 20:23:10,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:10,815 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:10,815 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:10,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-05-21 20:23:10,815 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]=== [2021-05-21 20:23:10,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:10,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1977705053, now seen corresponding path program 233 times [2021-05-21 20:23:10,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:10,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500838448] [2021-05-21 20:23:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:10,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:10,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500838448] [2021-05-21 20:23:10,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500838448] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:10,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:10,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:10,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074198817] [2021-05-21 20:23:10,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:10,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:10,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:10,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:10,905 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) [2021-05-21 20:23:10,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:10,966 INFO L93 Difference]: Finished difference Result 3169 states and 11731 transitions. [2021-05-21 20:23:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:10,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:10,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:10,972 INFO L225 Difference]: With dead ends: 3169 [2021-05-21 20:23:10,972 INFO L226 Difference]: Without dead ends: 2994 [2021-05-21 20:23:10,972 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 [2021-05-21 20:23:10,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-05-21 20:23:11,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1518. [2021-05-21 20:23:11,010 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) [2021-05-21 20:23:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 5972 transitions. [2021-05-21 20:23:11,012 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 5972 transitions. Word has length 25 [2021-05-21 20:23:11,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:11,012 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 5972 transitions. [2021-05-21 20:23:11,012 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) [2021-05-21 20:23:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 5972 transitions. [2021-05-21 20:23:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:11,014 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:11,015 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] [2021-05-21 20:23:11,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-05-21 20:23:11,015 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]=== [2021-05-21 20:23:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:11,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2098910657, now seen corresponding path program 234 times [2021-05-21 20:23:11,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:11,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046583599] [2021-05-21 20:23:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:11,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:11,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046583599] [2021-05-21 20:23:11,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046583599] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:11,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:11,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:11,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870573846] [2021-05-21 20:23:11,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:11,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:11,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:11,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:11,105 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) [2021-05-21 20:23:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:11,159 INFO L93 Difference]: Finished difference Result 3121 states and 11531 transitions. [2021-05-21 20:23:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:11,159 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 [2021-05-21 20:23:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:11,164 INFO L225 Difference]: With dead ends: 3121 [2021-05-21 20:23:11,164 INFO L226 Difference]: Without dead ends: 2831 [2021-05-21 20:23:11,164 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 [2021-05-21 20:23:11,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2021-05-21 20:23:11,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1450. [2021-05-21 20:23:11,200 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) [2021-05-21 20:23:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5738 transitions. [2021-05-21 20:23:11,202 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5738 transitions. Word has length 25 [2021-05-21 20:23:11,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:11,202 INFO L482 AbstractCegarLoop]: Abstraction has 1450 states and 5738 transitions. [2021-05-21 20:23:11,202 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) [2021-05-21 20:23:11,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5738 transitions. [2021-05-21 20:23:11,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:11,204 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:11,204 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] [2021-05-21 20:23:11,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-05-21 20:23:11,204 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]=== [2021-05-21 20:23:11,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:11,205 INFO L82 PathProgramCache]: Analyzing trace with hash -364053957, now seen corresponding path program 235 times [2021-05-21 20:23:11,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:11,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165265965] [2021-05-21 20:23:11,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:11,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:11,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165265965] [2021-05-21 20:23:11,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165265965] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:11,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:11,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:11,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657693998] [2021-05-21 20:23:11,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:11,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:11,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:11,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:11,295 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) [2021-05-21 20:23:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:11,357 INFO L93 Difference]: Finished difference Result 3166 states and 11768 transitions. [2021-05-21 20:23:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:11,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:11,363 INFO L225 Difference]: With dead ends: 3166 [2021-05-21 20:23:11,363 INFO L226 Difference]: Without dead ends: 2979 [2021-05-21 20:23:11,363 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 [2021-05-21 20:23:11,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2021-05-21 20:23:11,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 1494. [2021-05-21 20:23:11,400 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) [2021-05-21 20:23:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5906 transitions. [2021-05-21 20:23:11,403 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5906 transitions. Word has length 25 [2021-05-21 20:23:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:11,403 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5906 transitions. [2021-05-21 20:23:11,403 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) [2021-05-21 20:23:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5906 transitions. [2021-05-21 20:23:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:11,405 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:11,405 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] [2021-05-21 20:23:11,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-05-21 20:23:11,405 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]=== [2021-05-21 20:23:11,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:11,405 INFO L82 PathProgramCache]: Analyzing trace with hash -570861923, now seen corresponding path program 236 times [2021-05-21 20:23:11,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:11,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105542453] [2021-05-21 20:23:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:11,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:11,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105542453] [2021-05-21 20:23:11,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105542453] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:11,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:11,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:11,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474941627] [2021-05-21 20:23:11,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:11,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:11,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:11,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:11,478 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) [2021-05-21 20:23:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:11,538 INFO L93 Difference]: Finished difference Result 3154 states and 11704 transitions. [2021-05-21 20:23:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:11,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:11,543 INFO L225 Difference]: With dead ends: 3154 [2021-05-21 20:23:11,543 INFO L226 Difference]: Without dead ends: 2955 [2021-05-21 20:23:11,544 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:11,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-05-21 20:23:11,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1470. [2021-05-21 20:23:11,580 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) [2021-05-21 20:23:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5818 transitions. [2021-05-21 20:23:11,583 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5818 transitions. Word has length 25 [2021-05-21 20:23:11,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:11,583 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5818 transitions. [2021-05-21 20:23:11,583 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) [2021-05-21 20:23:11,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5818 transitions. [2021-05-21 20:23:11,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:11,585 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:11,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:11,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-05-21 20:23:11,585 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]=== [2021-05-21 20:23:11,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:11,585 INFO L82 PathProgramCache]: Analyzing trace with hash -981577315, now seen corresponding path program 237 times [2021-05-21 20:23:11,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:11,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453562417] [2021-05-21 20:23:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:11,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:11,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453562417] [2021-05-21 20:23:11,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453562417] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:11,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:11,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:11,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725884022] [2021-05-21 20:23:11,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:11,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:11,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:11,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:11,659 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) [2021-05-21 20:23:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:11,722 INFO L93 Difference]: Finished difference Result 3189 states and 11815 transitions. [2021-05-21 20:23:11,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:11,722 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 [2021-05-21 20:23:11,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:11,727 INFO L225 Difference]: With dead ends: 3189 [2021-05-21 20:23:11,727 INFO L226 Difference]: Without dead ends: 3002 [2021-05-21 20:23:11,728 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 [2021-05-21 20:23:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2021-05-21 20:23:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 1516. [2021-05-21 20:23:11,764 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) [2021-05-21 20:23:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5975 transitions. [2021-05-21 20:23:11,767 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5975 transitions. Word has length 25 [2021-05-21 20:23:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:11,767 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 5975 transitions. [2021-05-21 20:23:11,767 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) [2021-05-21 20:23:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5975 transitions. [2021-05-21 20:23:11,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:11,769 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:11,769 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] [2021-05-21 20:23:11,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-05-21 20:23:11,769 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]=== [2021-05-21 20:23:11,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:11,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1499676387, now seen corresponding path program 238 times [2021-05-21 20:23:11,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:11,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899276356] [2021-05-21 20:23:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:11,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:11,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899276356] [2021-05-21 20:23:11,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899276356] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:11,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:11,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:11,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642598059] [2021-05-21 20:23:11,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:11,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:11,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:11,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:11,844 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) [2021-05-21 20:23:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:11,894 INFO L93 Difference]: Finished difference Result 3224 states and 11904 transitions. [2021-05-21 20:23:11,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:11,894 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 [2021-05-21 20:23:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:11,899 INFO L225 Difference]: With dead ends: 3224 [2021-05-21 20:23:11,899 INFO L226 Difference]: Without dead ends: 2956 [2021-05-21 20:23:11,899 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-05-21 20:23:11,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1470. [2021-05-21 20:23:11,935 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) [2021-05-21 20:23:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5798 transitions. [2021-05-21 20:23:11,938 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5798 transitions. Word has length 25 [2021-05-21 20:23:11,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:11,938 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5798 transitions. [2021-05-21 20:23:11,938 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) [2021-05-21 20:23:11,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5798 transitions. [2021-05-21 20:23:11,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:11,940 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:11,940 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] [2021-05-21 20:23:11,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-05-21 20:23:11,940 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]=== [2021-05-21 20:23:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:11,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1720466687, now seen corresponding path program 239 times [2021-05-21 20:23:11,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:11,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755805533] [2021-05-21 20:23:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:12,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:12,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755805533] [2021-05-21 20:23:12,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755805533] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:12,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:12,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:12,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661498082] [2021-05-21 20:23:12,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:12,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:12,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:12,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:12,024 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) [2021-05-21 20:23:12,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:12,089 INFO L93 Difference]: Finished difference Result 3159 states and 11692 transitions. [2021-05-21 20:23:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:12,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:12,095 INFO L225 Difference]: With dead ends: 3159 [2021-05-21 20:23:12,095 INFO L226 Difference]: Without dead ends: 2984 [2021-05-21 20:23:12,095 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 [2021-05-21 20:23:12,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2021-05-21 20:23:12,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1510. [2021-05-21 20:23:12,133 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) [2021-05-21 20:23:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 5938 transitions. [2021-05-21 20:23:12,135 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 5938 transitions. Word has length 25 [2021-05-21 20:23:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:12,136 INFO L482 AbstractCegarLoop]: Abstraction has 1510 states and 5938 transitions. [2021-05-21 20:23:12,136 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) [2021-05-21 20:23:12,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 5938 transitions. [2021-05-21 20:23:12,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:12,138 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:12,138 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] [2021-05-21 20:23:12,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-05-21 20:23:12,138 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]=== [2021-05-21 20:23:12,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:12,138 INFO L82 PathProgramCache]: Analyzing trace with hash -100568739, now seen corresponding path program 240 times [2021-05-21 20:23:12,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:12,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869589657] [2021-05-21 20:23:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:12,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:12,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869589657] [2021-05-21 20:23:12,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869589657] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:12,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:12,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:12,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061934486] [2021-05-21 20:23:12,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:12,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:12,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:12,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:12,223 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) [2021-05-21 20:23:12,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:12,274 INFO L93 Difference]: Finished difference Result 3111 states and 11492 transitions. [2021-05-21 20:23:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:12,275 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 [2021-05-21 20:23:12,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:12,280 INFO L225 Difference]: With dead ends: 3111 [2021-05-21 20:23:12,280 INFO L226 Difference]: Without dead ends: 2803 [2021-05-21 20:23:12,280 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2021-05-21 20:23:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 1424. [2021-05-21 20:23:12,315 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) [2021-05-21 20:23:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5675 transitions. [2021-05-21 20:23:12,318 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5675 transitions. Word has length 25 [2021-05-21 20:23:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:12,318 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5675 transitions. [2021-05-21 20:23:12,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5675 transitions. [2021-05-21 20:23:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:12,320 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:12,320 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] [2021-05-21 20:23:12,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-05-21 20:23:12,320 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]=== [2021-05-21 20:23:12,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:12,320 INFO L82 PathProgramCache]: Analyzing trace with hash -272332129, now seen corresponding path program 241 times [2021-05-21 20:23:12,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:12,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229667179] [2021-05-21 20:23:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:12,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:12,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229667179] [2021-05-21 20:23:12,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229667179] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:12,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:12,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:12,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323539328] [2021-05-21 20:23:12,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:12,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:12,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:12,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:12,408 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) [2021-05-21 20:23:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:12,477 INFO L93 Difference]: Finished difference Result 3076 states and 11383 transitions. [2021-05-21 20:23:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:12,478 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 [2021-05-21 20:23:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:12,483 INFO L225 Difference]: With dead ends: 3076 [2021-05-21 20:23:12,483 INFO L226 Difference]: Without dead ends: 2917 [2021-05-21 20:23:12,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2021-05-21 20:23:12,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1480. [2021-05-21 20:23:12,519 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) [2021-05-21 20:23:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 5887 transitions. [2021-05-21 20:23:12,522 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 5887 transitions. Word has length 25 [2021-05-21 20:23:12,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:12,522 INFO L482 AbstractCegarLoop]: Abstraction has 1480 states and 5887 transitions. [2021-05-21 20:23:12,522 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) [2021-05-21 20:23:12,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 5887 transitions. [2021-05-21 20:23:12,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:12,524 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:12,524 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] [2021-05-21 20:23:12,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-05-21 20:23:12,524 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]=== [2021-05-21 20:23:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:12,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1280630113, now seen corresponding path program 242 times [2021-05-21 20:23:12,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:12,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008725847] [2021-05-21 20:23:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:12,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:12,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008725847] [2021-05-21 20:23:12,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008725847] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:12,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:12,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:12,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761122813] [2021-05-21 20:23:12,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:12,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:12,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:12,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:12,625 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) [2021-05-21 20:23:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:12,687 INFO L93 Difference]: Finished difference Result 3139 states and 11590 transitions. [2021-05-21 20:23:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:12,688 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 [2021-05-21 20:23:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:12,694 INFO L225 Difference]: With dead ends: 3139 [2021-05-21 20:23:12,694 INFO L226 Difference]: Without dead ends: 2885 [2021-05-21 20:23:12,694 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 [2021-05-21 20:23:12,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2021-05-21 20:23:12,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1448. [2021-05-21 20:23:12,730 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) [2021-05-21 20:23:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5759 transitions. [2021-05-21 20:23:12,732 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5759 transitions. Word has length 25 [2021-05-21 20:23:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:12,733 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5759 transitions. [2021-05-21 20:23:12,733 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) [2021-05-21 20:23:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5759 transitions. [2021-05-21 20:23:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:12,734 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:12,735 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:12,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-05-21 20:23:12,735 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]=== [2021-05-21 20:23:12,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:12,735 INFO L82 PathProgramCache]: Analyzing trace with hash -233717445, now seen corresponding path program 243 times [2021-05-21 20:23:12,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:12,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344246872] [2021-05-21 20:23:12,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:12,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:12,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:12,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344246872] [2021-05-21 20:23:12,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344246872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:12,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:12,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:12,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849092878] [2021-05-21 20:23:12,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:12,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:12,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:12,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:12,822 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) [2021-05-21 20:23:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:12,907 INFO L93 Difference]: Finished difference Result 3027 states and 11189 transitions. [2021-05-21 20:23:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:12,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:12,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:12,913 INFO L225 Difference]: With dead ends: 3027 [2021-05-21 20:23:12,913 INFO L226 Difference]: Without dead ends: 2868 [2021-05-21 20:23:12,913 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 [2021-05-21 20:23:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2021-05-21 20:23:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1464. [2021-05-21 20:23:12,949 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) [2021-05-21 20:23:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5807 transitions. [2021-05-21 20:23:12,952 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5807 transitions. Word has length 25 [2021-05-21 20:23:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:12,952 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5807 transitions. [2021-05-21 20:23:12,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5807 transitions. [2021-05-21 20:23:12,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:12,954 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:12,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:12,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-05-21 20:23:12,954 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]=== [2021-05-21 20:23:12,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:12,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1823652195, now seen corresponding path program 244 times [2021-05-21 20:23:12,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:12,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129205862] [2021-05-21 20:23:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:13,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:13,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129205862] [2021-05-21 20:23:13,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129205862] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:13,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:13,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:13,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772717874] [2021-05-21 20:23:13,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:13,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:13,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:13,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:13,041 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) [2021-05-21 20:23:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:13,113 INFO L93 Difference]: Finished difference Result 3057 states and 11282 transitions. [2021-05-21 20:23:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:13,114 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 [2021-05-21 20:23:13,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:13,119 INFO L225 Difference]: With dead ends: 3057 [2021-05-21 20:23:13,119 INFO L226 Difference]: Without dead ends: 2852 [2021-05-21 20:23:13,119 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 [2021-05-21 20:23:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-05-21 20:23:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1448. [2021-05-21 20:23:13,155 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) [2021-05-21 20:23:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5751 transitions. [2021-05-21 20:23:13,157 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5751 transitions. Word has length 25 [2021-05-21 20:23:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:13,157 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5751 transitions. [2021-05-21 20:23:13,157 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) [2021-05-21 20:23:13,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5751 transitions. [2021-05-21 20:23:13,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:13,159 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:13,159 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] [2021-05-21 20:23:13,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-05-21 20:23:13,159 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]=== [2021-05-21 20:23:13,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:13,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1833151615, now seen corresponding path program 245 times [2021-05-21 20:23:13,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:13,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317894288] [2021-05-21 20:23:13,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:13,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:13,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317894288] [2021-05-21 20:23:13,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317894288] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:13,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:13,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:13,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228565318] [2021-05-21 20:23:13,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:13,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:13,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:13,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:13,240 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) [2021-05-21 20:23:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:13,311 INFO L93 Difference]: Finished difference Result 3167 states and 11687 transitions. [2021-05-21 20:23:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:13,311 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 [2021-05-21 20:23:13,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:13,316 INFO L225 Difference]: With dead ends: 3167 [2021-05-21 20:23:13,316 INFO L226 Difference]: Without dead ends: 2978 [2021-05-21 20:23:13,316 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 [2021-05-21 20:23:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2021-05-21 20:23:13,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1511. [2021-05-21 20:23:13,353 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) [2021-05-21 20:23:13,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 5958 transitions. [2021-05-21 20:23:13,356 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 5958 transitions. Word has length 25 [2021-05-21 20:23:13,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:13,356 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 5958 transitions. [2021-05-21 20:23:13,356 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) [2021-05-21 20:23:13,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 5958 transitions. [2021-05-21 20:23:13,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:13,358 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:13,358 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] [2021-05-21 20:23:13,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-05-21 20:23:13,358 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]=== [2021-05-21 20:23:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:13,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2131204573, now seen corresponding path program 246 times [2021-05-21 20:23:13,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:13,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815160569] [2021-05-21 20:23:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:13,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:13,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815160569] [2021-05-21 20:23:13,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815160569] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:13,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:13,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:13,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776456764] [2021-05-21 20:23:13,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:13,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:13,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:13,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:13,440 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) [2021-05-21 20:23:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:13,500 INFO L93 Difference]: Finished difference Result 3200 states and 11770 transitions. [2021-05-21 20:23:13,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:13,501 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 [2021-05-21 20:23:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:13,506 INFO L225 Difference]: With dead ends: 3200 [2021-05-21 20:23:13,506 INFO L226 Difference]: Without dead ends: 2891 [2021-05-21 20:23:13,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2021-05-21 20:23:13,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1424. [2021-05-21 20:23:13,542 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) [2021-05-21 20:23:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5663 transitions. [2021-05-21 20:23:13,544 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5663 transitions. Word has length 25 [2021-05-21 20:23:13,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:13,545 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5663 transitions. [2021-05-21 20:23:13,545 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) [2021-05-21 20:23:13,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5663 transitions. [2021-05-21 20:23:13,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:13,546 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:13,546 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] [2021-05-21 20:23:13,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-05-21 20:23:13,547 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]=== [2021-05-21 20:23:13,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:13,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1026847549, now seen corresponding path program 247 times [2021-05-21 20:23:13,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:13,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265317514] [2021-05-21 20:23:13,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:13,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:13,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265317514] [2021-05-21 20:23:13,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265317514] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:13,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:13,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:13,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567454652] [2021-05-21 20:23:13,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:13,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:13,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:13,634 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) [2021-05-21 20:23:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:13,688 INFO L93 Difference]: Finished difference Result 3043 states and 11268 transitions. [2021-05-21 20:23:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:13,688 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 [2021-05-21 20:23:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:13,693 INFO L225 Difference]: With dead ends: 3043 [2021-05-21 20:23:13,693 INFO L226 Difference]: Without dead ends: 2884 [2021-05-21 20:23:13,693 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2021-05-21 20:23:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1472. [2021-05-21 20:23:13,730 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) [2021-05-21 20:23:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5847 transitions. [2021-05-21 20:23:13,732 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5847 transitions. Word has length 25 [2021-05-21 20:23:13,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:13,732 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5847 transitions. [2021-05-21 20:23:13,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:13,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5847 transitions. [2021-05-21 20:23:13,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:13,734 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:13,734 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:13,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-05-21 20:23:13,734 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]=== [2021-05-21 20:23:13,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:13,735 INFO L82 PathProgramCache]: Analyzing trace with hash 18549565, now seen corresponding path program 248 times [2021-05-21 20:23:13,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:13,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658945248] [2021-05-21 20:23:13,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:13,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:13,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658945248] [2021-05-21 20:23:13,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658945248] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:13,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:13,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:13,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802971909] [2021-05-21 20:23:13,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:13,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:13,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:13,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:13,822 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) [2021-05-21 20:23:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:13,882 INFO L93 Difference]: Finished difference Result 3106 states and 11475 transitions. [2021-05-21 20:23:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:13,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:13,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:13,887 INFO L225 Difference]: With dead ends: 3106 [2021-05-21 20:23:13,888 INFO L226 Difference]: Without dead ends: 2852 [2021-05-21 20:23:13,888 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-05-21 20:23:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1440. [2021-05-21 20:23:13,924 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) [2021-05-21 20:23:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5719 transitions. [2021-05-21 20:23:13,927 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5719 transitions. Word has length 25 [2021-05-21 20:23:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:13,927 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5719 transitions. [2021-05-21 20:23:13,927 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) [2021-05-21 20:23:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5719 transitions. [2021-05-21 20:23:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:13,929 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:13,929 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:13,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-05-21 20:23:13,929 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]=== [2021-05-21 20:23:13,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:13,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1234329889, now seen corresponding path program 249 times [2021-05-21 20:23:13,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:13,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290268599] [2021-05-21 20:23:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:14,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:14,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290268599] [2021-05-21 20:23:14,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290268599] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:14,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:14,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:14,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50952573] [2021-05-21 20:23:14,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:14,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:14,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:14,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:14,012 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) [2021-05-21 20:23:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:14,080 INFO L93 Difference]: Finished difference Result 2988 states and 11057 transitions. [2021-05-21 20:23:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:14,086 INFO L225 Difference]: With dead ends: 2988 [2021-05-21 20:23:14,086 INFO L226 Difference]: Without dead ends: 2829 [2021-05-21 20:23:14,086 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2021-05-21 20:23:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1456. [2021-05-21 20:23:14,122 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) [2021-05-21 20:23:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5767 transitions. [2021-05-21 20:23:14,124 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5767 transitions. Word has length 25 [2021-05-21 20:23:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:14,124 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5767 transitions. [2021-05-21 20:23:14,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:14,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5767 transitions. [2021-05-21 20:23:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:14,126 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:14,126 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:14,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-05-21 20:23:14,126 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]=== [2021-05-21 20:23:14,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:14,127 INFO L82 PathProgramCache]: Analyzing trace with hash 446166751, now seen corresponding path program 250 times [2021-05-21 20:23:14,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:14,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609841452] [2021-05-21 20:23:14,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:14,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:14,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609841452] [2021-05-21 20:23:14,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609841452] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:14,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:14,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:14,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141666442] [2021-05-21 20:23:14,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:14,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:14,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:14,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:14,208 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) [2021-05-21 20:23:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:14,281 INFO L93 Difference]: Finished difference Result 3012 states and 11133 transitions. [2021-05-21 20:23:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:14,281 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:14,286 INFO L225 Difference]: With dead ends: 3012 [2021-05-21 20:23:14,286 INFO L226 Difference]: Without dead ends: 2813 [2021-05-21 20:23:14,286 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 [2021-05-21 20:23:14,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2021-05-21 20:23:14,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 1440. [2021-05-21 20:23:14,322 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) [2021-05-21 20:23:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5711 transitions. [2021-05-21 20:23:14,324 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5711 transitions. Word has length 25 [2021-05-21 20:23:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:14,325 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5711 transitions. [2021-05-21 20:23:14,325 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) [2021-05-21 20:23:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5711 transitions. [2021-05-21 20:23:14,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:14,327 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:14,327 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:14,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-05-21 20:23:14,327 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]=== [2021-05-21 20:23:14,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:14,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2134413023, now seen corresponding path program 251 times [2021-05-21 20:23:14,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:14,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031120040] [2021-05-21 20:23:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:14,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:14,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031120040] [2021-05-21 20:23:14,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031120040] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:14,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:14,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:14,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645081567] [2021-05-21 20:23:14,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:14,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:14,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:14,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:14,454 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) [2021-05-21 20:23:14,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:14,528 INFO L93 Difference]: Finished difference Result 3103 states and 11480 transitions. [2021-05-21 20:23:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:14,529 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 [2021-05-21 20:23:14,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:14,536 INFO L225 Difference]: With dead ends: 3103 [2021-05-21 20:23:14,536 INFO L226 Difference]: Without dead ends: 2920 [2021-05-21 20:23:14,536 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 140.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:14,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2021-05-21 20:23:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1484. [2021-05-21 20:23:14,576 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) [2021-05-21 20:23:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5863 transitions. [2021-05-21 20:23:14,579 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5863 transitions. Word has length 25 [2021-05-21 20:23:14,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:14,579 INFO L482 AbstractCegarLoop]: Abstraction has 1484 states and 5863 transitions. [2021-05-21 20:23:14,579 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) [2021-05-21 20:23:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5863 transitions. [2021-05-21 20:23:14,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:14,581 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:14,581 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] [2021-05-21 20:23:14,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-05-21 20:23:14,582 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]=== [2021-05-21 20:23:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:14,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1130081085, now seen corresponding path program 252 times [2021-05-21 20:23:14,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:14,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231506376] [2021-05-21 20:23:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:14,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:14,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:14,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231506376] [2021-05-21 20:23:14,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231506376] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:14,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:14,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:14,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270659537] [2021-05-21 20:23:14,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:14,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:14,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:14,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:14,690 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) [2021-05-21 20:23:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:14,755 INFO L93 Difference]: Finished difference Result 3142 states and 11583 transitions. [2021-05-21 20:23:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:14,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:14,761 INFO L225 Difference]: With dead ends: 3142 [2021-05-21 20:23:14,761 INFO L226 Difference]: Without dead ends: 2860 [2021-05-21 20:23:14,761 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 [2021-05-21 20:23:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-05-21 20:23:14,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1424. [2021-05-21 20:23:14,797 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) [2021-05-21 20:23:14,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5655 transitions. [2021-05-21 20:23:14,800 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5655 transitions. Word has length 25 [2021-05-21 20:23:14,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:14,800 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5655 transitions. [2021-05-21 20:23:14,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:14,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5655 transitions. [2021-05-21 20:23:14,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:14,802 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:14,802 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:14,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-05-21 20:23:14,802 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]=== [2021-05-21 20:23:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:14,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1721451033, now seen corresponding path program 253 times [2021-05-21 20:23:14,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:14,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651610639] [2021-05-21 20:23:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:14,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:14,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651610639] [2021-05-21 20:23:14,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651610639] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:14,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:14,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:14,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273937833] [2021-05-21 20:23:14,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:14,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:14,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:14,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:14,888 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) [2021-05-21 20:23:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:14,947 INFO L93 Difference]: Finished difference Result 2921 states and 10804 transitions. [2021-05-21 20:23:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:14,947 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 [2021-05-21 20:23:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:14,952 INFO L225 Difference]: With dead ends: 2921 [2021-05-21 20:23:14,952 INFO L226 Difference]: Without dead ends: 2762 [2021-05-21 20:23:14,952 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2021-05-21 20:23:14,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1448. [2021-05-21 20:23:14,987 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) [2021-05-21 20:23:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5739 transitions. [2021-05-21 20:23:14,990 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5739 transitions. Word has length 25 [2021-05-21 20:23:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:14,990 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5739 transitions. [2021-05-21 20:23:14,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5739 transitions. [2021-05-21 20:23:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:14,992 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:14,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:14,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-05-21 20:23:14,992 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]=== [2021-05-21 20:23:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:14,992 INFO L82 PathProgramCache]: Analyzing trace with hash 131516283, now seen corresponding path program 254 times [2021-05-21 20:23:14,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:14,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778789042] [2021-05-21 20:23:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:15,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:15,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778789042] [2021-05-21 20:23:15,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778789042] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:15,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:15,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:15,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699941870] [2021-05-21 20:23:15,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:15,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:15,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:15,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:15,089 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) [2021-05-21 20:23:15,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:15,161 INFO L93 Difference]: Finished difference Result 2951 states and 10897 transitions. [2021-05-21 20:23:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:15,161 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 [2021-05-21 20:23:15,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:15,166 INFO L225 Difference]: With dead ends: 2951 [2021-05-21 20:23:15,166 INFO L226 Difference]: Without dead ends: 2746 [2021-05-21 20:23:15,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2021-05-21 20:23:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1432. [2021-05-21 20:23:15,201 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) [2021-05-21 20:23:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5683 transitions. [2021-05-21 20:23:15,204 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5683 transitions. Word has length 25 [2021-05-21 20:23:15,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:15,204 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5683 transitions. [2021-05-21 20:23:15,204 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) [2021-05-21 20:23:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5683 transitions. [2021-05-21 20:23:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:15,206 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:15,206 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:15,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-05-21 20:23:15,206 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]=== [2021-05-21 20:23:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1514643067, now seen corresponding path program 255 times [2021-05-21 20:23:15,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:15,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105733900] [2021-05-21 20:23:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:15,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:15,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105733900] [2021-05-21 20:23:15,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105733900] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:15,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:15,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:15,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414775466] [2021-05-21 20:23:15,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:15,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:15,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:15,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:15,280 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) [2021-05-21 20:23:15,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:15,354 INFO L93 Difference]: Finished difference Result 2915 states and 10779 transitions. [2021-05-21 20:23:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:15,354 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 [2021-05-21 20:23:15,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:15,361 INFO L225 Difference]: With dead ends: 2915 [2021-05-21 20:23:15,361 INFO L226 Difference]: Without dead ends: 2756 [2021-05-21 20:23:15,361 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 [2021-05-21 20:23:15,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-05-21 20:23:15,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1448. [2021-05-21 20:23:15,403 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) [2021-05-21 20:23:15,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5731 transitions. [2021-05-21 20:23:15,405 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5731 transitions. Word has length 25 [2021-05-21 20:23:15,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:15,405 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5731 transitions. [2021-05-21 20:23:15,405 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) [2021-05-21 20:23:15,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5731 transitions. [2021-05-21 20:23:15,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:15,407 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:15,407 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:15,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-05-21 20:23:15,407 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]=== [2021-05-21 20:23:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:15,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1099827589, now seen corresponding path program 256 times [2021-05-21 20:23:15,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:15,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009136933] [2021-05-21 20:23:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:15,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:15,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009136933] [2021-05-21 20:23:15,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009136933] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:15,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:15,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:15,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003796609] [2021-05-21 20:23:15,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:15,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:15,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:15,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:15,497 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) [2021-05-21 20:23:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:15,565 INFO L93 Difference]: Finished difference Result 2939 states and 10855 transitions. [2021-05-21 20:23:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:15,565 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 [2021-05-21 20:23:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:15,570 INFO L225 Difference]: With dead ends: 2939 [2021-05-21 20:23:15,570 INFO L226 Difference]: Without dead ends: 2740 [2021-05-21 20:23:15,570 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 [2021-05-21 20:23:15,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2021-05-21 20:23:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 1432. [2021-05-21 20:23:15,605 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) [2021-05-21 20:23:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5675 transitions. [2021-05-21 20:23:15,608 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5675 transitions. Word has length 25 [2021-05-21 20:23:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:15,608 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5675 transitions. [2021-05-21 20:23:15,608 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) [2021-05-21 20:23:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5675 transitions. [2021-05-21 20:23:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:15,609 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:15,610 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] [2021-05-21 20:23:15,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-05-21 20:23:15,610 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]=== [2021-05-21 20:23:15,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:15,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1363162275, now seen corresponding path program 257 times [2021-05-21 20:23:15,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:15,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691159319] [2021-05-21 20:23:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:15,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:15,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691159319] [2021-05-21 20:23:15,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691159319] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:15,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:15,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:15,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915051213] [2021-05-21 20:23:15,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:15,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:15,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:15,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:15,697 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) [2021-05-21 20:23:15,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:15,759 INFO L93 Difference]: Finished difference Result 2987 states and 11041 transitions. [2021-05-21 20:23:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:15,760 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 [2021-05-21 20:23:15,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:15,765 INFO L225 Difference]: With dead ends: 2987 [2021-05-21 20:23:15,765 INFO L226 Difference]: Without dead ends: 2798 [2021-05-21 20:23:15,765 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 [2021-05-21 20:23:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-05-21 20:23:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1460. [2021-05-21 20:23:15,800 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) [2021-05-21 20:23:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5763 transitions. [2021-05-21 20:23:15,803 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5763 transitions. Word has length 25 [2021-05-21 20:23:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:15,803 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5763 transitions. [2021-05-21 20:23:15,803 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) [2021-05-21 20:23:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5763 transitions. [2021-05-21 20:23:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:15,805 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:15,805 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:15,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-05-21 20:23:15,805 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]=== [2021-05-21 20:23:15,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:15,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1539660475, now seen corresponding path program 258 times [2021-05-21 20:23:15,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:15,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582616285] [2021-05-21 20:23:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:15,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:15,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582616285] [2021-05-21 20:23:15,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582616285] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:15,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:15,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:15,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822487382] [2021-05-21 20:23:15,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:15,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:15,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:15,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:15,878 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) [2021-05-21 20:23:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:15,943 INFO L93 Difference]: Finished difference Result 2981 states and 10996 transitions. [2021-05-21 20:23:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:15,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:15,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:15,948 INFO L225 Difference]: With dead ends: 2981 [2021-05-21 20:23:15,948 INFO L226 Difference]: Without dead ends: 2762 [2021-05-21 20:23:15,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2021-05-21 20:23:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1424. [2021-05-21 20:23:15,983 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) [2021-05-21 20:23:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5651 transitions. [2021-05-21 20:23:15,986 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5651 transitions. Word has length 25 [2021-05-21 20:23:15,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:15,986 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5651 transitions. [2021-05-21 20:23:15,986 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) [2021-05-21 20:23:15,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5651 transitions. [2021-05-21 20:23:15,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:15,988 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:15,988 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] [2021-05-21 20:23:15,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-05-21 20:23:15,988 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]=== [2021-05-21 20:23:15,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:15,988 INFO L82 PathProgramCache]: Analyzing trace with hash -457948993, now seen corresponding path program 259 times [2021-05-21 20:23:15,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:15,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413511375] [2021-05-21 20:23:15,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:16,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:16,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413511375] [2021-05-21 20:23:16,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413511375] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:16,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:16,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:16,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196500149] [2021-05-21 20:23:16,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:16,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:16,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:16,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:16,063 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) [2021-05-21 20:23:16,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:16,127 INFO L93 Difference]: Finished difference Result 3147 states and 11659 transitions. [2021-05-21 20:23:16,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:16,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:16,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:16,133 INFO L225 Difference]: With dead ends: 3147 [2021-05-21 20:23:16,133 INFO L226 Difference]: Without dead ends: 2958 [2021-05-21 20:23:16,133 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 [2021-05-21 20:23:16,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2021-05-21 20:23:16,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1482. [2021-05-21 20:23:16,170 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) [2021-05-21 20:23:16,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5868 transitions. [2021-05-21 20:23:16,172 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5868 transitions. Word has length 25 [2021-05-21 20:23:16,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:16,172 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5868 transitions. [2021-05-21 20:23:16,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:16,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5868 transitions. [2021-05-21 20:23:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:16,174 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:16,174 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:16,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-05-21 20:23:16,174 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]=== [2021-05-21 20:23:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:16,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1850093539, now seen corresponding path program 260 times [2021-05-21 20:23:16,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:16,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710896848] [2021-05-21 20:23:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:16,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:16,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710896848] [2021-05-21 20:23:16,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710896848] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:16,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:16,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:16,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387360794] [2021-05-21 20:23:16,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:16,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:16,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:16,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:16,251 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) [2021-05-21 20:23:16,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:16,310 INFO L93 Difference]: Finished difference Result 3141 states and 11614 transitions. [2021-05-21 20:23:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:16,311 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 [2021-05-21 20:23:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:16,316 INFO L225 Difference]: With dead ends: 3141 [2021-05-21 20:23:16,316 INFO L226 Difference]: Without dead ends: 2930 [2021-05-21 20:23:16,316 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 [2021-05-21 20:23:16,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-05-21 20:23:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1454. [2021-05-21 20:23:16,353 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) [2021-05-21 20:23:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5766 transitions. [2021-05-21 20:23:16,355 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5766 transitions. Word has length 25 [2021-05-21 20:23:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:16,355 INFO L482 AbstractCegarLoop]: Abstraction has 1454 states and 5766 transitions. [2021-05-21 20:23:16,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5766 transitions. [2021-05-21 20:23:16,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:16,357 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:16,357 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] [2021-05-21 20:23:16,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-05-21 20:23:16,357 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]=== [2021-05-21 20:23:16,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:16,358 INFO L82 PathProgramCache]: Analyzing trace with hash 746700189, now seen corresponding path program 261 times [2021-05-21 20:23:16,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:16,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778482168] [2021-05-21 20:23:16,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:16,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:16,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778482168] [2021-05-21 20:23:16,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778482168] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:16,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:16,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:16,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926590590] [2021-05-21 20:23:16,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:16,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:16,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:16,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:16,447 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) [2021-05-21 20:23:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:16,506 INFO L93 Difference]: Finished difference Result 3221 states and 11898 transitions. [2021-05-21 20:23:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:16,507 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 [2021-05-21 20:23:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:16,512 INFO L225 Difference]: With dead ends: 3221 [2021-05-21 20:23:16,513 INFO L226 Difference]: Without dead ends: 3032 [2021-05-21 20:23:16,513 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 [2021-05-21 20:23:16,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-05-21 20:23:16,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1517. [2021-05-21 20:23:16,550 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) [2021-05-21 20:23:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 5973 transitions. [2021-05-21 20:23:16,553 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 5973 transitions. Word has length 25 [2021-05-21 20:23:16,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:16,553 INFO L482 AbstractCegarLoop]: Abstraction has 1517 states and 5973 transitions. [2021-05-21 20:23:16,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 5973 transitions. [2021-05-21 20:23:16,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:16,555 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:16,555 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] [2021-05-21 20:23:16,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-05-21 20:23:16,555 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]=== [2021-05-21 20:23:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:16,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1478782493, now seen corresponding path program 262 times [2021-05-21 20:23:16,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:16,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748424213] [2021-05-21 20:23:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:16,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:16,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748424213] [2021-05-21 20:23:16,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748424213] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:16,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:16,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:16,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983424924] [2021-05-21 20:23:16,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:16,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:16,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:16,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:16,648 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) [2021-05-21 20:23:16,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:16,707 INFO L93 Difference]: Finished difference Result 3254 states and 11981 transitions. [2021-05-21 20:23:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:16,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:16,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:16,714 INFO L225 Difference]: With dead ends: 3254 [2021-05-21 20:23:16,714 INFO L226 Difference]: Without dead ends: 2969 [2021-05-21 20:23:16,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2021-05-21 20:23:16,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1454. [2021-05-21 20:23:16,767 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) [2021-05-21 20:23:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5736 transitions. [2021-05-21 20:23:16,770 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5736 transitions. Word has length 25 [2021-05-21 20:23:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:16,771 INFO L482 AbstractCegarLoop]: Abstraction has 1454 states and 5736 transitions. [2021-05-21 20:23:16,771 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) [2021-05-21 20:23:16,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5736 transitions. [2021-05-21 20:23:16,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:16,773 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:16,773 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] [2021-05-21 20:23:16,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-05-21 20:23:16,773 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]=== [2021-05-21 20:23:16,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:16,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1110957563, now seen corresponding path program 263 times [2021-05-21 20:23:16,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:16,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492556912] [2021-05-21 20:23:16,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:16,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:16,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492556912] [2021-05-21 20:23:16,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492556912] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:16,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:16,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:16,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648064540] [2021-05-21 20:23:16,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:16,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:16,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:16,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:16,871 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) [2021-05-21 20:23:16,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:16,932 INFO L93 Difference]: Finished difference Result 3190 states and 11776 transitions. [2021-05-21 20:23:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:16,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:16,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:16,938 INFO L225 Difference]: With dead ends: 3190 [2021-05-21 20:23:16,938 INFO L226 Difference]: Without dead ends: 3007 [2021-05-21 20:23:16,938 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:16,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-05-21 20:23:16,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 1498. [2021-05-21 20:23:16,975 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) [2021-05-21 20:23:16,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5888 transitions. [2021-05-21 20:23:16,978 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5888 transitions. Word has length 25 [2021-05-21 20:23:16,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:16,978 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5888 transitions. [2021-05-21 20:23:16,978 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) [2021-05-21 20:23:16,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5888 transitions. [2021-05-21 20:23:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:16,980 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:16,980 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] [2021-05-21 20:23:16,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-05-21 20:23:16,980 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]=== [2021-05-21 20:23:16,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:16,980 INFO L82 PathProgramCache]: Analyzing trace with hash 41438557, now seen corresponding path program 264 times [2021-05-21 20:23:16,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:16,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225833816] [2021-05-21 20:23:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:17,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:17,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225833816] [2021-05-21 20:23:17,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225833816] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:17,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:17,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:17,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681499660] [2021-05-21 20:23:17,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:17,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:17,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:17,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:17,064 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) [2021-05-21 20:23:17,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:17,112 INFO L93 Difference]: Finished difference Result 3229 states and 11879 transitions. [2021-05-21 20:23:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:17,113 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 [2021-05-21 20:23:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:17,118 INFO L225 Difference]: With dead ends: 3229 [2021-05-21 20:23:17,118 INFO L226 Difference]: Without dead ends: 2921 [2021-05-21 20:23:17,118 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 [2021-05-21 20:23:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-05-21 20:23:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1412. [2021-05-21 20:23:17,155 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) [2021-05-21 20:23:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5613 transitions. [2021-05-21 20:23:17,157 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5613 transitions. Word has length 25 [2021-05-21 20:23:17,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:17,157 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5613 transitions. [2021-05-21 20:23:17,157 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) [2021-05-21 20:23:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5613 transitions. [2021-05-21 20:23:17,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:17,159 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:17,159 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] [2021-05-21 20:23:17,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-05-21 20:23:17,159 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]=== [2021-05-21 20:23:17,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:17,160 INFO L82 PathProgramCache]: Analyzing trace with hash 751563645, now seen corresponding path program 265 times [2021-05-21 20:23:17,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:17,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523571238] [2021-05-21 20:23:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:17,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:17,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523571238] [2021-05-21 20:23:17,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523571238] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:17,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:17,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:17,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470983051] [2021-05-21 20:23:17,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:17,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:17,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:17,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:17,253 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) [2021-05-21 20:23:17,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:17,303 INFO L93 Difference]: Finished difference Result 3022 states and 11152 transitions. [2021-05-21 20:23:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:17,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:17,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:17,308 INFO L225 Difference]: With dead ends: 3022 [2021-05-21 20:23:17,308 INFO L226 Difference]: Without dead ends: 2863 [2021-05-21 20:23:17,308 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 [2021-05-21 20:23:17,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2021-05-21 20:23:17,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1444. [2021-05-21 20:23:17,344 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) [2021-05-21 20:23:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5725 transitions. [2021-05-21 20:23:17,347 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5725 transitions. Word has length 25 [2021-05-21 20:23:17,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:17,347 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5725 transitions. [2021-05-21 20:23:17,347 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) [2021-05-21 20:23:17,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5725 transitions. [2021-05-21 20:23:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:17,349 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:17,349 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] [2021-05-21 20:23:17,349 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-05-21 20:23:17,349 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]=== [2021-05-21 20:23:17,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:17,349 INFO L82 PathProgramCache]: Analyzing trace with hash -256734339, now seen corresponding path program 266 times [2021-05-21 20:23:17,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:17,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86317707] [2021-05-21 20:23:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:17,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:17,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86317707] [2021-05-21 20:23:17,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86317707] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:17,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:17,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:17,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600937545] [2021-05-21 20:23:17,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:17,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:17,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:17,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:17,443 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) [2021-05-21 20:23:17,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:17,492 INFO L93 Difference]: Finished difference Result 3085 states and 11359 transitions. [2021-05-21 20:23:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:17,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:17,497 INFO L225 Difference]: With dead ends: 3085 [2021-05-21 20:23:17,497 INFO L226 Difference]: Without dead ends: 2831 [2021-05-21 20:23:17,497 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 [2021-05-21 20:23:17,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2021-05-21 20:23:17,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1412. [2021-05-21 20:23:17,532 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) [2021-05-21 20:23:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5597 transitions. [2021-05-21 20:23:17,535 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5597 transitions. Word has length 25 [2021-05-21 20:23:17,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:17,535 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5597 transitions. [2021-05-21 20:23:17,535 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) [2021-05-21 20:23:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5597 transitions. [2021-05-21 20:23:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:17,537 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:17,537 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] [2021-05-21 20:23:17,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-05-21 20:23:17,537 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]=== [2021-05-21 20:23:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:17,537 INFO L82 PathProgramCache]: Analyzing trace with hash 790178329, now seen corresponding path program 267 times [2021-05-21 20:23:17,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:17,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127872978] [2021-05-21 20:23:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:17,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:17,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127872978] [2021-05-21 20:23:17,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127872978] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:17,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:17,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:17,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965336476] [2021-05-21 20:23:17,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:17,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:17,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:17,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:17,631 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) [2021-05-21 20:23:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:17,680 INFO L93 Difference]: Finished difference Result 2973 states and 10958 transitions. [2021-05-21 20:23:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:17,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:17,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:17,685 INFO L225 Difference]: With dead ends: 2973 [2021-05-21 20:23:17,685 INFO L226 Difference]: Without dead ends: 2814 [2021-05-21 20:23:17,685 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 [2021-05-21 20:23:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2021-05-21 20:23:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 1428. [2021-05-21 20:23:17,720 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) [2021-05-21 20:23:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 5645 transitions. [2021-05-21 20:23:17,723 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 5645 transitions. Word has length 25 [2021-05-21 20:23:17,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:17,723 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 5645 transitions. [2021-05-21 20:23:17,723 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) [2021-05-21 20:23:17,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 5645 transitions. [2021-05-21 20:23:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:17,725 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:17,725 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] [2021-05-21 20:23:17,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-05-21 20:23:17,725 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]=== [2021-05-21 20:23:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash -799756421, now seen corresponding path program 268 times [2021-05-21 20:23:17,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:17,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613005578] [2021-05-21 20:23:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:17,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:17,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613005578] [2021-05-21 20:23:17,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613005578] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:17,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:17,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:17,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772748206] [2021-05-21 20:23:17,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:17,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:17,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:17,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:17,835 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) [2021-05-21 20:23:17,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:17,903 INFO L93 Difference]: Finished difference Result 3003 states and 11051 transitions. [2021-05-21 20:23:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:17,904 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 [2021-05-21 20:23:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:17,909 INFO L225 Difference]: With dead ends: 3003 [2021-05-21 20:23:17,909 INFO L226 Difference]: Without dead ends: 2798 [2021-05-21 20:23:17,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-05-21 20:23:17,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1412. [2021-05-21 20:23:17,944 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) [2021-05-21 20:23:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5589 transitions. [2021-05-21 20:23:17,947 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5589 transitions. Word has length 25 [2021-05-21 20:23:17,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:17,947 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5589 transitions. [2021-05-21 20:23:17,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5589 transitions. [2021-05-21 20:23:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:17,949 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:17,949 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:17,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-05-21 20:23:17,949 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]=== [2021-05-21 20:23:17,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:17,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1437919907, now seen corresponding path program 269 times [2021-05-21 20:23:17,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:17,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763083790] [2021-05-21 20:23:17,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:18,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:18,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763083790] [2021-05-21 20:23:18,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763083790] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:18,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:18,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:18,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774323480] [2021-05-21 20:23:18,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:18,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:18,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:18,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:18,057 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) [2021-05-21 20:23:18,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:18,133 INFO L93 Difference]: Finished difference Result 3113 states and 11456 transitions. [2021-05-21 20:23:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:18,133 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 [2021-05-21 20:23:18,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:18,140 INFO L225 Difference]: With dead ends: 3113 [2021-05-21 20:23:18,140 INFO L226 Difference]: Without dead ends: 2924 [2021-05-21 20:23:18,140 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 [2021-05-21 20:23:18,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2021-05-21 20:23:18,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1475. [2021-05-21 20:23:18,177 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) [2021-05-21 20:23:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 5796 transitions. [2021-05-21 20:23:18,180 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 5796 transitions. Word has length 25 [2021-05-21 20:23:18,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:18,180 INFO L482 AbstractCegarLoop]: Abstraction has 1475 states and 5796 transitions. [2021-05-21 20:23:18,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 5796 transitions. [2021-05-21 20:23:18,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:18,182 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:18,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:18,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-05-21 20:23:18,182 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]=== [2021-05-21 20:23:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:18,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1139866949, now seen corresponding path program 270 times [2021-05-21 20:23:18,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:18,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005123403] [2021-05-21 20:23:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:18,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:18,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005123403] [2021-05-21 20:23:18,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005123403] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:18,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:18,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:18,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225759376] [2021-05-21 20:23:18,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:18,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:18,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:18,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:18,270 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) [2021-05-21 20:23:18,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:18,326 INFO L93 Difference]: Finished difference Result 3146 states and 11539 transitions. [2021-05-21 20:23:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:18,326 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 [2021-05-21 20:23:18,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:18,331 INFO L225 Difference]: With dead ends: 3146 [2021-05-21 20:23:18,331 INFO L226 Difference]: Without dead ends: 2837 [2021-05-21 20:23:18,331 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 [2021-05-21 20:23:18,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2021-05-21 20:23:18,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1388. [2021-05-21 20:23:18,366 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) [2021-05-21 20:23:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5501 transitions. [2021-05-21 20:23:18,369 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5501 transitions. Word has length 25 [2021-05-21 20:23:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:18,369 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5501 transitions. [2021-05-21 20:23:18,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5501 transitions. [2021-05-21 20:23:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:18,383 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:18,383 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:18,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-05-21 20:23:18,383 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]=== [2021-05-21 20:23:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash 811236285, now seen corresponding path program 271 times [2021-05-21 20:23:18,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:18,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160699425] [2021-05-21 20:23:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:18,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:18,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160699425] [2021-05-21 20:23:18,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160699425] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:18,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:18,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:18,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394408816] [2021-05-21 20:23:18,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:18,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:18,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:18,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:18,490 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) [2021-05-21 20:23:18,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:18,540 INFO L93 Difference]: Finished difference Result 2945 states and 10865 transitions. [2021-05-21 20:23:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:18,541 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 [2021-05-21 20:23:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:18,546 INFO L225 Difference]: With dead ends: 2945 [2021-05-21 20:23:18,546 INFO L226 Difference]: Without dead ends: 2786 [2021-05-21 20:23:18,546 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 [2021-05-21 20:23:18,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-05-21 20:23:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1436. [2021-05-21 20:23:18,581 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) [2021-05-21 20:23:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5685 transitions. [2021-05-21 20:23:18,583 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5685 transitions. Word has length 25 [2021-05-21 20:23:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:18,583 INFO L482 AbstractCegarLoop]: Abstraction has 1436 states and 5685 transitions. [2021-05-21 20:23:18,583 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) [2021-05-21 20:23:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5685 transitions. [2021-05-21 20:23:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:18,585 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:18,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:18,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-05-21 20:23:18,585 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]=== [2021-05-21 20:23:18,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:18,585 INFO L82 PathProgramCache]: Analyzing trace with hash -197061699, now seen corresponding path program 272 times [2021-05-21 20:23:18,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:18,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380526852] [2021-05-21 20:23:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:18,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:18,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380526852] [2021-05-21 20:23:18,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380526852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:18,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:18,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:18,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14510971] [2021-05-21 20:23:18,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:18,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:18,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:18,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:18,679 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) [2021-05-21 20:23:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:18,737 INFO L93 Difference]: Finished difference Result 3008 states and 11072 transitions. [2021-05-21 20:23:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:18,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:18,742 INFO L225 Difference]: With dead ends: 3008 [2021-05-21 20:23:18,743 INFO L226 Difference]: Without dead ends: 2754 [2021-05-21 20:23:18,743 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 [2021-05-21 20:23:18,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-05-21 20:23:18,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1404. [2021-05-21 20:23:18,777 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) [2021-05-21 20:23:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5557 transitions. [2021-05-21 20:23:18,779 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5557 transitions. Word has length 25 [2021-05-21 20:23:18,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:18,779 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5557 transitions. [2021-05-21 20:23:18,780 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) [2021-05-21 20:23:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5557 transitions. [2021-05-21 20:23:18,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:18,781 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:18,781 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:18,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-05-21 20:23:18,781 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]=== [2021-05-21 20:23:18,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:18,782 INFO L82 PathProgramCache]: Analyzing trace with hash -405184801, now seen corresponding path program 273 times [2021-05-21 20:23:18,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:18,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324126952] [2021-05-21 20:23:18,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:18,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:18,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324126952] [2021-05-21 20:23:18,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324126952] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:18,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:18,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:18,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346322472] [2021-05-21 20:23:18,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:18,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:18,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:18,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:18,869 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) [2021-05-21 20:23:18,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:18,926 INFO L93 Difference]: Finished difference Result 2850 states and 10514 transitions. [2021-05-21 20:23:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:18,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:18,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:18,931 INFO L225 Difference]: With dead ends: 2850 [2021-05-21 20:23:18,931 INFO L226 Difference]: Without dead ends: 2691 [2021-05-21 20:23:18,931 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 [2021-05-21 20:23:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2021-05-21 20:23:18,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 1420. [2021-05-21 20:23:18,965 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) [2021-05-21 20:23:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5605 transitions. [2021-05-21 20:23:18,968 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5605 transitions. Word has length 25 [2021-05-21 20:23:18,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:18,968 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5605 transitions. [2021-05-21 20:23:18,968 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) [2021-05-21 20:23:18,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5605 transitions. [2021-05-21 20:23:18,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:18,970 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:18,970 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] [2021-05-21 20:23:18,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-05-21 20:23:18,970 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]=== [2021-05-21 20:23:18,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:18,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1947510495, now seen corresponding path program 274 times [2021-05-21 20:23:18,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:18,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465393284] [2021-05-21 20:23:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:19,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:19,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465393284] [2021-05-21 20:23:19,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465393284] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:19,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:19,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:19,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171395379] [2021-05-21 20:23:19,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:19,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:19,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:19,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:19,056 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) [2021-05-21 20:23:19,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:19,118 INFO L93 Difference]: Finished difference Result 2738 states and 10177 transitions. [2021-05-21 20:23:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:19,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:19,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:19,122 INFO L225 Difference]: With dead ends: 2738 [2021-05-21 20:23:19,123 INFO L226 Difference]: Without dead ends: 2547 [2021-05-21 20:23:19,123 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 [2021-05-21 20:23:19,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2021-05-21 20:23:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 1404. [2021-05-21 20:23:19,155 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) [2021-05-21 20:23:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5549 transitions. [2021-05-21 20:23:19,158 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5549 transitions. Word has length 25 [2021-05-21 20:23:19,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:19,158 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5549 transitions. [2021-05-21 20:23:19,158 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) [2021-05-21 20:23:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5549 transitions. [2021-05-21 20:23:19,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:19,160 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:19,160 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] [2021-05-21 20:23:19,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-05-21 20:23:19,160 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]=== [2021-05-21 20:23:19,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:19,160 INFO L82 PathProgramCache]: Analyzing trace with hash -659210529, now seen corresponding path program 275 times [2021-05-21 20:23:19,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:19,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839261724] [2021-05-21 20:23:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:19,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:19,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839261724] [2021-05-21 20:23:19,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839261724] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:19,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:19,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:19,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380765085] [2021-05-21 20:23:19,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:19,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:19,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:19,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:19,253 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) [2021-05-21 20:23:19,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:19,334 INFO L93 Difference]: Finished difference Result 2985 states and 11005 transitions. [2021-05-21 20:23:19,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:19,334 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 [2021-05-21 20:23:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:19,339 INFO L225 Difference]: With dead ends: 2985 [2021-05-21 20:23:19,340 INFO L226 Difference]: Without dead ends: 2810 [2021-05-21 20:23:19,340 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:19,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-05-21 20:23:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1444. [2021-05-21 20:23:19,374 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) [2021-05-21 20:23:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5689 transitions. [2021-05-21 20:23:19,377 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5689 transitions. Word has length 25 [2021-05-21 20:23:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:19,377 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5689 transitions. [2021-05-21 20:23:19,377 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) [2021-05-21 20:23:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5689 transitions. [2021-05-21 20:23:19,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:19,379 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:19,379 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] [2021-05-21 20:23:19,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-05-21 20:23:19,379 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]=== [2021-05-21 20:23:19,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:19,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1980232381, now seen corresponding path program 276 times [2021-05-21 20:23:19,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:19,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770847551] [2021-05-21 20:23:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:19,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:19,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770847551] [2021-05-21 20:23:19,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770847551] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:19,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:19,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:19,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180981803] [2021-05-21 20:23:19,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:19,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:19,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:19,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:19,474 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) [2021-05-21 20:23:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:19,523 INFO L93 Difference]: Finished difference Result 2937 states and 10805 transitions. [2021-05-21 20:23:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:19,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:19,528 INFO L225 Difference]: With dead ends: 2937 [2021-05-21 20:23:19,529 INFO L226 Difference]: Without dead ends: 2659 [2021-05-21 20:23:19,529 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 [2021-05-21 20:23:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2021-05-21 20:23:19,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 1388. [2021-05-21 20:23:19,562 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) [2021-05-21 20:23:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5493 transitions. [2021-05-21 20:23:19,565 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5493 transitions. Word has length 25 [2021-05-21 20:23:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:19,565 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5493 transitions. [2021-05-21 20:23:19,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:19,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5493 transitions. [2021-05-21 20:23:19,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:19,567 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:19,567 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] [2021-05-21 20:23:19,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-05-21 20:23:19,567 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]=== [2021-05-21 20:23:19,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:19,567 INFO L82 PathProgramCache]: Analyzing trace with hash -456500583, now seen corresponding path program 277 times [2021-05-21 20:23:19,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:19,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191787175] [2021-05-21 20:23:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:19,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:19,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191787175] [2021-05-21 20:23:19,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191787175] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:19,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:19,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:19,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904609666] [2021-05-21 20:23:19,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:19,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:19,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:19,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:19,662 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) [2021-05-21 20:23:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:19,712 INFO L93 Difference]: Finished difference Result 2839 states and 10465 transitions. [2021-05-21 20:23:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:19,712 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 [2021-05-21 20:23:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:19,718 INFO L225 Difference]: With dead ends: 2839 [2021-05-21 20:23:19,718 INFO L226 Difference]: Without dead ends: 2680 [2021-05-21 20:23:19,719 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 [2021-05-21 20:23:19,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-05-21 20:23:19,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1412. [2021-05-21 20:23:19,754 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) [2021-05-21 20:23:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5577 transitions. [2021-05-21 20:23:19,756 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5577 transitions. Word has length 25 [2021-05-21 20:23:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:19,756 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5577 transitions. [2021-05-21 20:23:19,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5577 transitions. [2021-05-21 20:23:19,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:19,758 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:19,758 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:19,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-05-21 20:23:19,758 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]=== [2021-05-21 20:23:19,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:19,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2046435333, now seen corresponding path program 278 times [2021-05-21 20:23:19,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:19,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3799668] [2021-05-21 20:23:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:19,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:19,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3799668] [2021-05-21 20:23:19,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3799668] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:19,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:19,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:19,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156163192] [2021-05-21 20:23:19,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:19,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:19,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:19,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:19,852 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) [2021-05-21 20:23:19,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:19,914 INFO L93 Difference]: Finished difference Result 2869 states and 10558 transitions. [2021-05-21 20:23:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:19,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:19,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:19,919 INFO L225 Difference]: With dead ends: 2869 [2021-05-21 20:23:19,919 INFO L226 Difference]: Without dead ends: 2664 [2021-05-21 20:23:19,919 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-05-21 20:23:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 1396. [2021-05-21 20:23:19,953 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) [2021-05-21 20:23:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 5521 transitions. [2021-05-21 20:23:19,956 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 5521 transitions. Word has length 25 [2021-05-21 20:23:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:19,956 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 5521 transitions. [2021-05-21 20:23:19,956 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) [2021-05-21 20:23:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 5521 transitions. [2021-05-21 20:23:19,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:19,958 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:19,958 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] [2021-05-21 20:23:19,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-05-21 20:23:19,958 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]=== [2021-05-21 20:23:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:19,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1951179141, now seen corresponding path program 279 times [2021-05-21 20:23:19,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:19,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698282433] [2021-05-21 20:23:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:20,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:20,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698282433] [2021-05-21 20:23:20,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698282433] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:20,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:20,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:20,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082153380] [2021-05-21 20:23:20,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:20,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:20,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:20,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:20,047 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) [2021-05-21 20:23:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:20,096 INFO L93 Difference]: Finished difference Result 2793 states and 10300 transitions. [2021-05-21 20:23:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:20,096 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 [2021-05-21 20:23:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:20,101 INFO L225 Difference]: With dead ends: 2793 [2021-05-21 20:23:20,101 INFO L226 Difference]: Without dead ends: 2634 [2021-05-21 20:23:20,101 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 [2021-05-21 20:23:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2021-05-21 20:23:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1412. [2021-05-21 20:23:20,134 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) [2021-05-21 20:23:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5569 transitions. [2021-05-21 20:23:20,136 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5569 transitions. Word has length 25 [2021-05-21 20:23:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:20,137 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5569 transitions. [2021-05-21 20:23:20,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5569 transitions. [2021-05-21 20:23:20,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:20,138 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:20,138 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] [2021-05-21 20:23:20,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-05-21 20:23:20,139 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]=== [2021-05-21 20:23:20,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:20,139 INFO L82 PathProgramCache]: Analyzing trace with hash 401516155, now seen corresponding path program 280 times [2021-05-21 20:23:20,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:20,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068043983] [2021-05-21 20:23:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:20,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:20,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068043983] [2021-05-21 20:23:20,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068043983] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:20,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:20,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:20,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995176777] [2021-05-21 20:23:20,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:20,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:20,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:20,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:20,227 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) [2021-05-21 20:23:20,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:20,289 INFO L93 Difference]: Finished difference Result 2681 states and 9963 transitions. [2021-05-21 20:23:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:20,290 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 [2021-05-21 20:23:20,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:20,294 INFO L225 Difference]: With dead ends: 2681 [2021-05-21 20:23:20,294 INFO L226 Difference]: Without dead ends: 2490 [2021-05-21 20:23:20,294 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 [2021-05-21 20:23:20,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2021-05-21 20:23:20,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 1396. [2021-05-21 20:23:20,339 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) [2021-05-21 20:23:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 5513 transitions. [2021-05-21 20:23:20,341 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 5513 transitions. Word has length 25 [2021-05-21 20:23:20,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:20,341 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 5513 transitions. [2021-05-21 20:23:20,341 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) [2021-05-21 20:23:20,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 5513 transitions. [2021-05-21 20:23:20,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:20,343 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:20,343 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] [2021-05-21 20:23:20,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-05-21 20:23:20,343 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]=== [2021-05-21 20:23:20,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:20,344 INFO L82 PathProgramCache]: Analyzing trace with hash -534017187, now seen corresponding path program 281 times [2021-05-21 20:23:20,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:20,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436013146] [2021-05-21 20:23:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:20,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:20,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436013146] [2021-05-21 20:23:20,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436013146] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:20,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:20,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:20,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615252718] [2021-05-21 20:23:20,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:20,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:20,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:20,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:20,441 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) [2021-05-21 20:23:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:20,500 INFO L93 Difference]: Finished difference Result 2831 states and 10437 transitions. [2021-05-21 20:23:20,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:20,500 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 [2021-05-21 20:23:20,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:20,505 INFO L225 Difference]: With dead ends: 2831 [2021-05-21 20:23:20,505 INFO L226 Difference]: Without dead ends: 2642 [2021-05-21 20:23:20,505 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 [2021-05-21 20:23:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-05-21 20:23:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1420. [2021-05-21 20:23:20,539 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) [2021-05-21 20:23:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5589 transitions. [2021-05-21 20:23:20,541 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5589 transitions. Word has length 25 [2021-05-21 20:23:20,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:20,541 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5589 transitions. [2021-05-21 20:23:20,541 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) [2021-05-21 20:23:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5589 transitions. [2021-05-21 20:23:20,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:20,543 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:20,543 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] [2021-05-21 20:23:20,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-05-21 20:23:20,543 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]=== [2021-05-21 20:23:20,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:20,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1274969285, now seen corresponding path program 282 times [2021-05-21 20:23:20,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:20,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574416389] [2021-05-21 20:23:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:20,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:20,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:20,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574416389] [2021-05-21 20:23:20,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574416389] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:20,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:20,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:20,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954161122] [2021-05-21 20:23:20,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:20,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:20,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:20,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:20,645 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) [2021-05-21 20:23:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:20,728 INFO L93 Difference]: Finished difference Result 2689 states and 9983 transitions. [2021-05-21 20:23:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:20,728 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 [2021-05-21 20:23:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:20,732 INFO L225 Difference]: With dead ends: 2689 [2021-05-21 20:23:20,732 INFO L226 Difference]: Without dead ends: 2482 [2021-05-21 20:23:20,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2021-05-21 20:23:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1388. [2021-05-21 20:23:20,766 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) [2021-05-21 20:23:20,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5489 transitions. [2021-05-21 20:23:20,768 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5489 transitions. Word has length 25 [2021-05-21 20:23:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:20,768 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5489 transitions. [2021-05-21 20:23:20,768 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) [2021-05-21 20:23:20,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5489 transitions. [2021-05-21 20:23:20,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:20,770 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:20,770 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:20,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-05-21 20:23:20,770 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]=== [2021-05-21 20:23:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:20,770 INFO L82 PathProgramCache]: Analyzing trace with hash 371196095, now seen corresponding path program 283 times [2021-05-21 20:23:20,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:20,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120113245] [2021-05-21 20:23:20,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:20,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:20,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120113245] [2021-05-21 20:23:20,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120113245] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:20,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:20,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:20,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472262780] [2021-05-21 20:23:20,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:20,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:20,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:20,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:20,872 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) [2021-05-21 20:23:20,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:20,931 INFO L93 Difference]: Finished difference Result 3063 states and 11315 transitions. [2021-05-21 20:23:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:20,931 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 [2021-05-21 20:23:20,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:20,936 INFO L225 Difference]: With dead ends: 3063 [2021-05-21 20:23:20,936 INFO L226 Difference]: Without dead ends: 2874 [2021-05-21 20:23:20,937 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 [2021-05-21 20:23:20,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2021-05-21 20:23:20,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1440. [2021-05-21 20:23:20,974 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) [2021-05-21 20:23:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5685 transitions. [2021-05-21 20:23:20,977 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5685 transitions. Word has length 25 [2021-05-21 20:23:20,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:20,977 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5685 transitions. [2021-05-21 20:23:20,977 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) [2021-05-21 20:23:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5685 transitions. [2021-05-21 20:23:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:20,978 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:20,979 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] [2021-05-21 20:23:20,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-05-21 20:23:20,979 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]=== [2021-05-21 20:23:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:20,979 INFO L82 PathProgramCache]: Analyzing trace with hash -369756003, now seen corresponding path program 284 times [2021-05-21 20:23:20,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:20,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714475258] [2021-05-21 20:23:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:21,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:21,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714475258] [2021-05-21 20:23:21,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714475258] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:21,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:21,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:21,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552235615] [2021-05-21 20:23:21,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:21,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:21,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:21,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:21,078 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) [2021-05-21 20:23:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:21,140 INFO L93 Difference]: Finished difference Result 3049 states and 11246 transitions. [2021-05-21 20:23:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:21,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:21,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:21,146 INFO L225 Difference]: With dead ends: 3049 [2021-05-21 20:23:21,146 INFO L226 Difference]: Without dead ends: 2850 [2021-05-21 20:23:21,146 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2021-05-21 20:23:21,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 1416. [2021-05-21 20:23:21,181 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) [2021-05-21 20:23:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5597 transitions. [2021-05-21 20:23:21,184 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5597 transitions. Word has length 25 [2021-05-21 20:23:21,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:21,184 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5597 transitions. [2021-05-21 20:23:21,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:21,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5597 transitions. [2021-05-21 20:23:21,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:21,186 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:21,186 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] [2021-05-21 20:23:21,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-05-21 20:23:21,186 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]=== [2021-05-21 20:23:21,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:21,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1449839331, now seen corresponding path program 285 times [2021-05-21 20:23:21,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:21,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694207559] [2021-05-21 20:23:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:21,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:21,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694207559] [2021-05-21 20:23:21,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694207559] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:21,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:21,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:21,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582331382] [2021-05-21 20:23:21,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:21,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:21,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:21,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:21,275 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) [2021-05-21 20:23:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:21,335 INFO L93 Difference]: Finished difference Result 3086 states and 11362 transitions. [2021-05-21 20:23:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:21,335 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 [2021-05-21 20:23:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:21,340 INFO L225 Difference]: With dead ends: 3086 [2021-05-21 20:23:21,340 INFO L226 Difference]: Without dead ends: 2897 [2021-05-21 20:23:21,340 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 [2021-05-21 20:23:21,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2021-05-21 20:23:21,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1479. [2021-05-21 20:23:21,378 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) [2021-05-21 20:23:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 5804 transitions. [2021-05-21 20:23:21,380 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 5804 transitions. Word has length 25 [2021-05-21 20:23:21,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:21,380 INFO L482 AbstractCegarLoop]: Abstraction has 1479 states and 5804 transitions. [2021-05-21 20:23:21,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 5804 transitions. [2021-05-21 20:23:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:21,382 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:21,382 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:21,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-05-21 20:23:21,382 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]=== [2021-05-21 20:23:21,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:21,383 INFO L82 PathProgramCache]: Analyzing trace with hash 570113565, now seen corresponding path program 286 times [2021-05-21 20:23:21,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:21,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031773244] [2021-05-21 20:23:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:21,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:21,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031773244] [2021-05-21 20:23:21,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031773244] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:21,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:21,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:21,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392448371] [2021-05-21 20:23:21,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:21,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:21,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:21,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:21,472 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) [2021-05-21 20:23:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:21,523 INFO L93 Difference]: Finished difference Result 3119 states and 11445 transitions. [2021-05-21 20:23:21,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:21,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:21,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:21,529 INFO L225 Difference]: With dead ends: 3119 [2021-05-21 20:23:21,529 INFO L226 Difference]: Without dead ends: 2834 [2021-05-21 20:23:21,529 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 [2021-05-21 20:23:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2021-05-21 20:23:21,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1416. [2021-05-21 20:23:21,563 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) [2021-05-21 20:23:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5569 transitions. [2021-05-21 20:23:21,565 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5569 transitions. Word has length 25 [2021-05-21 20:23:21,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:21,565 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5569 transitions. [2021-05-21 20:23:21,566 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) [2021-05-21 20:23:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5569 transitions. [2021-05-21 20:23:21,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:21,567 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:21,567 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] [2021-05-21 20:23:21,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-05-21 20:23:21,567 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]=== [2021-05-21 20:23:21,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:21,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1703672197, now seen corresponding path program 287 times [2021-05-21 20:23:21,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:21,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314489821] [2021-05-21 20:23:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:21,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:21,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314489821] [2021-05-21 20:23:21,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314489821] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:21,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:21,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:21,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854710926] [2021-05-21 20:23:21,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:21,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:21,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:21,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:21,663 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) [2021-05-21 20:23:21,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:21,727 INFO L93 Difference]: Finished difference Result 3035 states and 11170 transitions. [2021-05-21 20:23:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:21,727 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 [2021-05-21 20:23:21,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:21,732 INFO L225 Difference]: With dead ends: 3035 [2021-05-21 20:23:21,732 INFO L226 Difference]: Without dead ends: 2860 [2021-05-21 20:23:21,732 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-05-21 20:23:21,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1456. [2021-05-21 20:23:21,767 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) [2021-05-21 20:23:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5709 transitions. [2021-05-21 20:23:21,770 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5709 transitions. Word has length 25 [2021-05-21 20:23:21,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:21,770 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5709 transitions. [2021-05-21 20:23:21,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:21,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5709 transitions. [2021-05-21 20:23:21,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:21,772 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:21,772 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:21,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-05-21 20:23:21,772 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]=== [2021-05-21 20:23:21,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:21,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1485320611, now seen corresponding path program 288 times [2021-05-21 20:23:21,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:21,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837036512] [2021-05-21 20:23:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:21,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:21,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837036512] [2021-05-21 20:23:21,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837036512] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:21,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:21,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:21,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145993844] [2021-05-21 20:23:21,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:21,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:21,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:21,872 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) [2021-05-21 20:23:21,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:21,933 INFO L93 Difference]: Finished difference Result 2987 states and 10970 transitions. [2021-05-21 20:23:21,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:21,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:21,938 INFO L225 Difference]: With dead ends: 2987 [2021-05-21 20:23:21,938 INFO L226 Difference]: Without dead ends: 2685 [2021-05-21 20:23:21,938 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:21,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-05-21 20:23:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1376. [2021-05-21 20:23:21,971 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) [2021-05-21 20:23:21,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 5451 transitions. [2021-05-21 20:23:21,974 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 5451 transitions. Word has length 25 [2021-05-21 20:23:21,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:21,974 INFO L482 AbstractCegarLoop]: Abstraction has 1376 states and 5451 transitions. [2021-05-21 20:23:21,974 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) [2021-05-21 20:23:21,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 5451 transitions. [2021-05-21 20:23:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:21,975 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:21,975 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] [2021-05-21 20:23:21,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-05-21 20:23:21,976 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]=== [2021-05-21 20:23:21,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:21,976 INFO L82 PathProgramCache]: Analyzing trace with hash -194140965, now seen corresponding path program 289 times [2021-05-21 20:23:21,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:21,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84102199] [2021-05-21 20:23:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:22,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:22,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84102199] [2021-05-21 20:23:22,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84102199] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:22,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:22,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:22,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796227164] [2021-05-21 20:23:22,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:22,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:22,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:22,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:22,095 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) [2021-05-21 20:23:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:22,146 INFO L93 Difference]: Finished difference Result 2920 states and 10796 transitions. [2021-05-21 20:23:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:22,146 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 [2021-05-21 20:23:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:22,151 INFO L225 Difference]: With dead ends: 2920 [2021-05-21 20:23:22,151 INFO L226 Difference]: Without dead ends: 2761 [2021-05-21 20:23:22,151 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 [2021-05-21 20:23:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-05-21 20:23:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1432. [2021-05-21 20:23:22,189 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) [2021-05-21 20:23:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5675 transitions. [2021-05-21 20:23:22,191 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5675 transitions. Word has length 25 [2021-05-21 20:23:22,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:22,191 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5675 transitions. [2021-05-21 20:23:22,191 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) [2021-05-21 20:23:22,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5675 transitions. [2021-05-21 20:23:22,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:22,193 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:22,193 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] [2021-05-21 20:23:22,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-05-21 20:23:22,193 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]=== [2021-05-21 20:23:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:22,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1202438949, now seen corresponding path program 290 times [2021-05-21 20:23:22,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:22,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757045683] [2021-05-21 20:23:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:22,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:22,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757045683] [2021-05-21 20:23:22,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757045683] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:22,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:22,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:22,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791551523] [2021-05-21 20:23:22,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:22,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:22,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:22,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:22,285 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) [2021-05-21 20:23:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:22,347 INFO L93 Difference]: Finished difference Result 2983 states and 11003 transitions. [2021-05-21 20:23:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:22,347 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 [2021-05-21 20:23:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:22,353 INFO L225 Difference]: With dead ends: 2983 [2021-05-21 20:23:22,353 INFO L226 Difference]: Without dead ends: 2729 [2021-05-21 20:23:22,353 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 [2021-05-21 20:23:22,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-05-21 20:23:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1400. [2021-05-21 20:23:22,390 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) [2021-05-21 20:23:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5547 transitions. [2021-05-21 20:23:22,393 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5547 transitions. Word has length 25 [2021-05-21 20:23:22,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:22,393 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 5547 transitions. [2021-05-21 20:23:22,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5547 transitions. [2021-05-21 20:23:22,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:22,395 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:22,395 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:22,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-05-21 20:23:22,395 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]=== [2021-05-21 20:23:22,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:22,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1839648893, now seen corresponding path program 291 times [2021-05-21 20:23:22,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:22,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649769783] [2021-05-21 20:23:22,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:22,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:22,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649769783] [2021-05-21 20:23:22,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649769783] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:22,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:22,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:22,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074444939] [2021-05-21 20:23:22,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:22,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:22,481 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) [2021-05-21 20:23:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:22,536 INFO L93 Difference]: Finished difference Result 2865 states and 10585 transitions. [2021-05-21 20:23:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:22,536 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 [2021-05-21 20:23:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:22,541 INFO L225 Difference]: With dead ends: 2865 [2021-05-21 20:23:22,541 INFO L226 Difference]: Without dead ends: 2706 [2021-05-21 20:23:22,542 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 [2021-05-21 20:23:22,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-05-21 20:23:22,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1416. [2021-05-21 20:23:22,575 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) [2021-05-21 20:23:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5595 transitions. [2021-05-21 20:23:22,578 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5595 transitions. Word has length 25 [2021-05-21 20:23:22,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:22,578 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5595 transitions. [2021-05-21 20:23:22,578 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) [2021-05-21 20:23:22,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5595 transitions. [2021-05-21 20:23:22,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:22,580 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:22,580 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] [2021-05-21 20:23:22,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-05-21 20:23:22,580 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]=== [2021-05-21 20:23:22,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:22,580 INFO L82 PathProgramCache]: Analyzing trace with hash -774821763, now seen corresponding path program 292 times [2021-05-21 20:23:22,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:22,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6416809] [2021-05-21 20:23:22,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:22,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:22,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6416809] [2021-05-21 20:23:22,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6416809] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:22,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:22,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:22,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754672165] [2021-05-21 20:23:22,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:22,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:22,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:22,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:22,667 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) [2021-05-21 20:23:22,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:22,732 INFO L93 Difference]: Finished difference Result 2889 states and 10661 transitions. [2021-05-21 20:23:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:22,733 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 [2021-05-21 20:23:22,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:22,738 INFO L225 Difference]: With dead ends: 2889 [2021-05-21 20:23:22,738 INFO L226 Difference]: Without dead ends: 2690 [2021-05-21 20:23:22,738 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 [2021-05-21 20:23:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-05-21 20:23:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1400. [2021-05-21 20:23:22,771 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) [2021-05-21 20:23:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5539 transitions. [2021-05-21 20:23:22,774 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5539 transitions. Word has length 25 [2021-05-21 20:23:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:22,774 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 5539 transitions. [2021-05-21 20:23:22,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5539 transitions. [2021-05-21 20:23:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:22,775 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:22,776 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:22,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-05-21 20:23:22,776 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]=== [2021-05-21 20:23:22,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:22,776 INFO L82 PathProgramCache]: Analyzing trace with hash 913424509, now seen corresponding path program 293 times [2021-05-21 20:23:22,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:22,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998990579] [2021-05-21 20:23:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:22,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:22,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998990579] [2021-05-21 20:23:22,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998990579] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:22,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:22,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:22,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811956477] [2021-05-21 20:23:22,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:22,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:22,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:22,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:22,869 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) [2021-05-21 20:23:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:22,940 INFO L93 Difference]: Finished difference Result 2980 states and 11008 transitions. [2021-05-21 20:23:22,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:22,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:22,945 INFO L225 Difference]: With dead ends: 2980 [2021-05-21 20:23:22,946 INFO L226 Difference]: Without dead ends: 2797 [2021-05-21 20:23:22,946 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 [2021-05-21 20:23:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2021-05-21 20:23:22,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 1444. [2021-05-21 20:23:22,981 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) [2021-05-21 20:23:22,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5691 transitions. [2021-05-21 20:23:22,984 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5691 transitions. Word has length 25 [2021-05-21 20:23:22,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:22,984 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5691 transitions. [2021-05-21 20:23:22,984 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) [2021-05-21 20:23:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5691 transitions. [2021-05-21 20:23:22,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:22,986 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:22,986 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] [2021-05-21 20:23:22,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-05-21 20:23:22,986 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]=== [2021-05-21 20:23:22,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:22,986 INFO L82 PathProgramCache]: Analyzing trace with hash -90907429, now seen corresponding path program 294 times [2021-05-21 20:23:22,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:22,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451572582] [2021-05-21 20:23:22,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:23,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:23,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451572582] [2021-05-21 20:23:23,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451572582] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:23,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:23,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:23,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372314356] [2021-05-21 20:23:23,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:23,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:23,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:23,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:23,081 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) [2021-05-21 20:23:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:23,140 INFO L93 Difference]: Finished difference Result 3019 states and 11111 transitions. [2021-05-21 20:23:23,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:23,141 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 [2021-05-21 20:23:23,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:23,146 INFO L225 Difference]: With dead ends: 3019 [2021-05-21 20:23:23,146 INFO L226 Difference]: Without dead ends: 2737 [2021-05-21 20:23:23,146 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 [2021-05-21 20:23:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2021-05-21 20:23:23,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1384. [2021-05-21 20:23:23,181 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) [2021-05-21 20:23:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 5483 transitions. [2021-05-21 20:23:23,184 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 5483 transitions. Word has length 25 [2021-05-21 20:23:23,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:23,184 INFO L482 AbstractCegarLoop]: Abstraction has 1384 states and 5483 transitions. [2021-05-21 20:23:23,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 5483 transitions. [2021-05-21 20:23:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:23,186 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:23,186 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] [2021-05-21 20:23:23,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-05-21 20:23:23,186 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]=== [2021-05-21 20:23:23,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:23,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1515460797, now seen corresponding path program 295 times [2021-05-21 20:23:23,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:23,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487761339] [2021-05-21 20:23:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:23,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:23,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487761339] [2021-05-21 20:23:23,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487761339] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:23,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:23,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:23,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849936539] [2021-05-21 20:23:23,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:23,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:23,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:23,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:23,286 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) [2021-05-21 20:23:23,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:23,344 INFO L93 Difference]: Finished difference Result 2860 states and 10544 transitions. [2021-05-21 20:23:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:23,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:23,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:23,349 INFO L225 Difference]: With dead ends: 2860 [2021-05-21 20:23:23,349 INFO L226 Difference]: Without dead ends: 2701 [2021-05-21 20:23:23,349 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 [2021-05-21 20:23:23,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-05-21 20:23:23,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 1432. [2021-05-21 20:23:23,384 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) [2021-05-21 20:23:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5667 transitions. [2021-05-21 20:23:23,387 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5667 transitions. Word has length 25 [2021-05-21 20:23:23,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:23,387 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5667 transitions. [2021-05-21 20:23:23,387 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) [2021-05-21 20:23:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5667 transitions. [2021-05-21 20:23:23,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:23,389 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:23,389 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] [2021-05-21 20:23:23,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-05-21 20:23:23,389 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]=== [2021-05-21 20:23:23,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:23,389 INFO L82 PathProgramCache]: Analyzing trace with hash 507162813, now seen corresponding path program 296 times [2021-05-21 20:23:23,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:23,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854654030] [2021-05-21 20:23:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:23,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:23,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854654030] [2021-05-21 20:23:23,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854654030] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:23,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:23,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:23,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593454896] [2021-05-21 20:23:23,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:23,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:23,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:23,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:23,500 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) [2021-05-21 20:23:23,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:23,553 INFO L93 Difference]: Finished difference Result 2923 states and 10751 transitions. [2021-05-21 20:23:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:23,554 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 [2021-05-21 20:23:23,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:23,558 INFO L225 Difference]: With dead ends: 2923 [2021-05-21 20:23:23,558 INFO L226 Difference]: Without dead ends: 2669 [2021-05-21 20:23:23,558 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 [2021-05-21 20:23:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2021-05-21 20:23:23,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 1400. [2021-05-21 20:23:23,592 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) [2021-05-21 20:23:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5539 transitions. [2021-05-21 20:23:23,594 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5539 transitions. Word has length 25 [2021-05-21 20:23:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:23,594 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 5539 transitions. [2021-05-21 20:23:23,594 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) [2021-05-21 20:23:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5539 transitions. [2021-05-21 20:23:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:23,596 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:23,596 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:23,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-05-21 20:23:23,596 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]=== [2021-05-21 20:23:23,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:23,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1728997379, now seen corresponding path program 297 times [2021-05-21 20:23:23,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:23,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066569850] [2021-05-21 20:23:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:23,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:23,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066569850] [2021-05-21 20:23:23,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066569850] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:23,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:23,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:23,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240423894] [2021-05-21 20:23:23,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:23,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:23,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:23,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:23,688 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) [2021-05-21 20:23:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:23,742 INFO L93 Difference]: Finished difference Result 2765 states and 10193 transitions. [2021-05-21 20:23:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:23,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:23,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:23,747 INFO L225 Difference]: With dead ends: 2765 [2021-05-21 20:23:23,747 INFO L226 Difference]: Without dead ends: 2606 [2021-05-21 20:23:23,747 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 [2021-05-21 20:23:23,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-05-21 20:23:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1416. [2021-05-21 20:23:23,780 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) [2021-05-21 20:23:23,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5587 transitions. [2021-05-21 20:23:23,783 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5587 transitions. Word has length 25 [2021-05-21 20:23:23,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:23,783 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5587 transitions. [2021-05-21 20:23:23,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5587 transitions. [2021-05-21 20:23:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:23,785 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:23,785 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:23,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-05-21 20:23:23,785 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]=== [2021-05-21 20:23:23,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:23,785 INFO L82 PathProgramCache]: Analyzing trace with hash 623697917, now seen corresponding path program 298 times [2021-05-21 20:23:23,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:23,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447407315] [2021-05-21 20:23:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:23,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:23,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447407315] [2021-05-21 20:23:23,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447407315] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:23,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:23,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:23,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286808827] [2021-05-21 20:23:23,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:23,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:23,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:23,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:23,885 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) [2021-05-21 20:23:23,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:23,951 INFO L93 Difference]: Finished difference Result 2653 states and 9856 transitions. [2021-05-21 20:23:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:23,951 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 [2021-05-21 20:23:23,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:23,956 INFO L225 Difference]: With dead ends: 2653 [2021-05-21 20:23:23,956 INFO L226 Difference]: Without dead ends: 2462 [2021-05-21 20:23:23,956 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2021-05-21 20:23:23,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 1400. [2021-05-21 20:23:23,989 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) [2021-05-21 20:23:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5531 transitions. [2021-05-21 20:23:23,992 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5531 transitions. Word has length 25 [2021-05-21 20:23:23,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:23,992 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 5531 transitions. [2021-05-21 20:23:23,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:23,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5531 transitions. [2021-05-21 20:23:23,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:23,993 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:23,994 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:23,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-05-21 20:23:23,994 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]=== [2021-05-21 20:23:23,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:23,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1983023107, now seen corresponding path program 299 times [2021-05-21 20:23:23,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:23,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884072230] [2021-05-21 20:23:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:24,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:24,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884072230] [2021-05-21 20:23:24,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884072230] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:24,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:24,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:24,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299748629] [2021-05-21 20:23:24,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:24,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:24,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:24,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:24,087 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) [2021-05-21 20:23:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:24,146 INFO L93 Difference]: Finished difference Result 2900 states and 10684 transitions. [2021-05-21 20:23:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:24,146 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 [2021-05-21 20:23:24,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:24,151 INFO L225 Difference]: With dead ends: 2900 [2021-05-21 20:23:24,151 INFO L226 Difference]: Without dead ends: 2725 [2021-05-21 20:23:24,151 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 [2021-05-21 20:23:24,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2021-05-21 20:23:24,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 1440. [2021-05-21 20:23:24,196 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) [2021-05-21 20:23:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5671 transitions. [2021-05-21 20:23:24,198 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5671 transitions. Word has length 25 [2021-05-21 20:23:24,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:24,198 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5671 transitions. [2021-05-21 20:23:24,198 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) [2021-05-21 20:23:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5671 transitions. [2021-05-21 20:23:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:24,200 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:24,200 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] [2021-05-21 20:23:24,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-05-21 20:23:24,200 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]=== [2021-05-21 20:23:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:24,201 INFO L82 PathProgramCache]: Analyzing trace with hash 656419803, now seen corresponding path program 300 times [2021-05-21 20:23:24,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:24,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309308118] [2021-05-21 20:23:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:24,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:24,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309308118] [2021-05-21 20:23:24,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309308118] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:24,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:24,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:24,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163155057] [2021-05-21 20:23:24,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:24,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:24,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:24,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:24,293 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) [2021-05-21 20:23:24,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:24,355 INFO L93 Difference]: Finished difference Result 2852 states and 10484 transitions. [2021-05-21 20:23:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:24,356 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 [2021-05-21 20:23:24,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:24,360 INFO L225 Difference]: With dead ends: 2852 [2021-05-21 20:23:24,360 INFO L226 Difference]: Without dead ends: 2574 [2021-05-21 20:23:24,360 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 [2021-05-21 20:23:24,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2021-05-21 20:23:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1384. [2021-05-21 20:23:24,393 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) [2021-05-21 20:23:24,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 5475 transitions. [2021-05-21 20:23:24,395 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 5475 transitions. Word has length 25 [2021-05-21 20:23:24,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:24,395 INFO L482 AbstractCegarLoop]: Abstraction has 1384 states and 5475 transitions. [2021-05-21 20:23:24,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:24,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 5475 transitions. [2021-05-21 20:23:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:24,397 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:24,397 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] [2021-05-21 20:23:24,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-05-21 20:23:24,397 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]=== [2021-05-21 20:23:24,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:24,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1090089759, now seen corresponding path program 301 times [2021-05-21 20:23:24,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:24,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183984286] [2021-05-21 20:23:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:24,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:24,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183984286] [2021-05-21 20:23:24,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183984286] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:24,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:24,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:24,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155935865] [2021-05-21 20:23:24,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:24,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:24,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:24,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:24,477 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) [2021-05-21 20:23:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:24,528 INFO L93 Difference]: Finished difference Result 2710 states and 9998 transitions. [2021-05-21 20:23:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:24,529 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 [2021-05-21 20:23:24,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:24,533 INFO L225 Difference]: With dead ends: 2710 [2021-05-21 20:23:24,533 INFO L226 Difference]: Without dead ends: 2551 [2021-05-21 20:23:24,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2021-05-21 20:23:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 1408. [2021-05-21 20:23:24,566 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) [2021-05-21 20:23:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 5559 transitions. [2021-05-21 20:23:24,569 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 5559 transitions. Word has length 25 [2021-05-21 20:23:24,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:24,569 INFO L482 AbstractCegarLoop]: Abstraction has 1408 states and 5559 transitions. [2021-05-21 20:23:24,569 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) [2021-05-21 20:23:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 5559 transitions. [2021-05-21 20:23:24,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:24,571 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:24,571 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] [2021-05-21 20:23:24,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-05-21 20:23:24,571 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]=== [2021-05-21 20:23:24,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:24,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1524380897, now seen corresponding path program 302 times [2021-05-21 20:23:24,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:24,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156369025] [2021-05-21 20:23:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:24,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:24,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156369025] [2021-05-21 20:23:24,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156369025] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:24,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:24,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:24,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923194390] [2021-05-21 20:23:24,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:24,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:24,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:24,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:24,656 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) [2021-05-21 20:23:24,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:24,728 INFO L93 Difference]: Finished difference Result 2734 states and 10074 transitions. [2021-05-21 20:23:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:24,728 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 [2021-05-21 20:23:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:24,733 INFO L225 Difference]: With dead ends: 2734 [2021-05-21 20:23:24,733 INFO L226 Difference]: Without dead ends: 2535 [2021-05-21 20:23:24,734 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 [2021-05-21 20:23:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2021-05-21 20:23:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 1392. [2021-05-21 20:23:24,768 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) [2021-05-21 20:23:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5503 transitions. [2021-05-21 20:23:24,771 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5503 transitions. Word has length 25 [2021-05-21 20:23:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:24,771 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5503 transitions. [2021-05-21 20:23:24,771 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) [2021-05-21 20:23:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5503 transitions. [2021-05-21 20:23:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:24,773 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:24,773 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] [2021-05-21 20:23:24,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-05-21 20:23:24,773 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]=== [2021-05-21 20:23:24,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:24,774 INFO L82 PathProgramCache]: Analyzing trace with hash 243292797, now seen corresponding path program 303 times [2021-05-21 20:23:24,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:24,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327581019] [2021-05-21 20:23:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:24,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:24,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327581019] [2021-05-21 20:23:24,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327581019] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:24,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:24,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:24,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213127917] [2021-05-21 20:23:24,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:24,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:24,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:24,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:24,854 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) [2021-05-21 20:23:24,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:24,902 INFO L93 Difference]: Finished difference Result 2654 states and 9786 transitions. [2021-05-21 20:23:24,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:24,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:24,906 INFO L225 Difference]: With dead ends: 2654 [2021-05-21 20:23:24,907 INFO L226 Difference]: Without dead ends: 2495 [2021-05-21 20:23:24,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2021-05-21 20:23:24,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1408. [2021-05-21 20:23:24,939 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) [2021-05-21 20:23:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 5551 transitions. [2021-05-21 20:23:24,941 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 5551 transitions. Word has length 25 [2021-05-21 20:23:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:24,941 INFO L482 AbstractCegarLoop]: Abstraction has 1408 states and 5551 transitions. [2021-05-21 20:23:24,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:24,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 5551 transitions. [2021-05-21 20:23:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:24,943 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:24,943 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:24,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-05-21 20:23:24,943 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]=== [2021-05-21 20:23:24,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:24,943 INFO L82 PathProgramCache]: Analyzing trace with hash 885631775, now seen corresponding path program 304 times [2021-05-21 20:23:24,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:24,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361536848] [2021-05-21 20:23:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:25,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:25,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361536848] [2021-05-21 20:23:25,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361536848] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:25,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:25,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:25,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442193796] [2021-05-21 20:23:25,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:25,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:25,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:25,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:25,027 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) [2021-05-21 20:23:25,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:25,087 INFO L93 Difference]: Finished difference Result 2542 states and 9449 transitions. [2021-05-21 20:23:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:25,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:25,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:25,091 INFO L225 Difference]: With dead ends: 2542 [2021-05-21 20:23:25,092 INFO L226 Difference]: Without dead ends: 2351 [2021-05-21 20:23:25,092 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 [2021-05-21 20:23:25,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-05-21 20:23:25,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1392. [2021-05-21 20:23:25,123 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) [2021-05-21 20:23:25,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5495 transitions. [2021-05-21 20:23:25,126 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5495 transitions. Word has length 25 [2021-05-21 20:23:25,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:25,126 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5495 transitions. [2021-05-21 20:23:25,126 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) [2021-05-21 20:23:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5495 transitions. [2021-05-21 20:23:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:25,128 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:25,128 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] [2021-05-21 20:23:25,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-05-21 20:23:25,128 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]=== [2021-05-21 20:23:25,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:25,128 INFO L82 PathProgramCache]: Analyzing trace with hash 263000863, now seen corresponding path program 305 times [2021-05-21 20:23:25,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:25,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323829819] [2021-05-21 20:23:25,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:25,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:25,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323829819] [2021-05-21 20:23:25,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323829819] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:25,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:25,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:25,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208369547] [2021-05-21 20:23:25,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:25,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:25,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:25,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:25,215 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) [2021-05-21 20:23:25,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:25,273 INFO L93 Difference]: Finished difference Result 2558 states and 9521 transitions. [2021-05-21 20:23:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:25,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:25,278 INFO L225 Difference]: With dead ends: 2558 [2021-05-21 20:23:25,278 INFO L226 Difference]: Without dead ends: 2375 [2021-05-21 20:23:25,278 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2021-05-21 20:23:25,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1416. [2021-05-21 20:23:25,310 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) [2021-05-21 20:23:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5571 transitions. [2021-05-21 20:23:25,313 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5571 transitions. Word has length 25 [2021-05-21 20:23:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:25,313 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5571 transitions. [2021-05-21 20:23:25,313 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) [2021-05-21 20:23:25,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5571 transitions. [2021-05-21 20:23:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:25,315 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:25,315 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] [2021-05-21 20:23:25,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-05-21 20:23:25,315 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]=== [2021-05-21 20:23:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:25,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1780336131, now seen corresponding path program 306 times [2021-05-21 20:23:25,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:25,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178949370] [2021-05-21 20:23:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:25,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:25,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178949370] [2021-05-21 20:23:25,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178949370] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:25,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:25,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:25,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638043777] [2021-05-21 20:23:25,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:25,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:25,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:25,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:25,405 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) [2021-05-21 20:23:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:25,462 INFO L93 Difference]: Finished difference Result 2374 states and 8908 transitions. [2021-05-21 20:23:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:25,463 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 [2021-05-21 20:23:25,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:25,466 INFO L225 Difference]: With dead ends: 2374 [2021-05-21 20:23:25,466 INFO L226 Difference]: Without dead ends: 2167 [2021-05-21 20:23:25,467 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 [2021-05-21 20:23:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2021-05-21 20:23:25,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1384. [2021-05-21 20:23:25,497 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) [2021-05-21 20:23:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 5471 transitions. [2021-05-21 20:23:25,500 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 5471 transitions. Word has length 25 [2021-05-21 20:23:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:25,500 INFO L482 AbstractCegarLoop]: Abstraction has 1384 states and 5471 transitions. [2021-05-21 20:23:25,500 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 5471 transitions. [2021-05-21 20:23:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:25,501 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:25,502 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:25,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-05-21 20:23:25,502 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]=== [2021-05-21 20:23:25,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:25,502 INFO L82 PathProgramCache]: Analyzing trace with hash -829969633, now seen corresponding path program 307 times [2021-05-21 20:23:25,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:25,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565689705] [2021-05-21 20:23:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:25,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:25,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565689705] [2021-05-21 20:23:25,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565689705] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:25,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:25,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:25,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741441303] [2021-05-21 20:23:25,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:25,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:25,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:25,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:25,587 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) [2021-05-21 20:23:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:25,645 INFO L93 Difference]: Finished difference Result 2933 states and 10857 transitions. [2021-05-21 20:23:25,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:25,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:25,651 INFO L225 Difference]: With dead ends: 2933 [2021-05-21 20:23:25,651 INFO L226 Difference]: Without dead ends: 2750 [2021-05-21 20:23:25,651 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 [2021-05-21 20:23:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2021-05-21 20:23:25,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 1428. [2021-05-21 20:23:25,685 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) [2021-05-21 20:23:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 5639 transitions. [2021-05-21 20:23:25,687 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 5639 transitions. Word has length 25 [2021-05-21 20:23:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:25,687 INFO L482 AbstractCegarLoop]: Abstraction has 1428 states and 5639 transitions. [2021-05-21 20:23:25,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:25,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 5639 transitions. [2021-05-21 20:23:25,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:25,689 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:25,689 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:25,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-05-21 20:23:25,689 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]=== [2021-05-21 20:23:25,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:25,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1421660669, now seen corresponding path program 308 times [2021-05-21 20:23:25,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:25,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269480108] [2021-05-21 20:23:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:25,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:25,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269480108] [2021-05-21 20:23:25,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269480108] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:25,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:25,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:25,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605045879] [2021-05-21 20:23:25,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:25,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:25,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:25,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:25,778 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) [2021-05-21 20:23:25,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:25,838 INFO L93 Difference]: Finished difference Result 2925 states and 10805 transitions. [2021-05-21 20:23:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:25,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:25,843 INFO L225 Difference]: With dead ends: 2925 [2021-05-21 20:23:25,843 INFO L226 Difference]: Without dead ends: 2726 [2021-05-21 20:23:25,844 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 [2021-05-21 20:23:25,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2021-05-21 20:23:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 1404. [2021-05-21 20:23:25,877 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) [2021-05-21 20:23:25,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5551 transitions. [2021-05-21 20:23:25,880 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5551 transitions. Word has length 25 [2021-05-21 20:23:25,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:25,880 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5551 transitions. [2021-05-21 20:23:25,880 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) [2021-05-21 20:23:25,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5551 transitions. [2021-05-21 20:23:25,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:25,882 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:25,882 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] [2021-05-21 20:23:25,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-05-21 20:23:25,882 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]=== [2021-05-21 20:23:25,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:25,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1643962237, now seen corresponding path program 309 times [2021-05-21 20:23:25,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:25,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331189549] [2021-05-21 20:23:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:25,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:25,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331189549] [2021-05-21 20:23:25,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331189549] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:25,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:25,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:25,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734122470] [2021-05-21 20:23:25,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:25,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:25,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:25,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:25,976 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) [2021-05-21 20:23:26,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:26,038 INFO L93 Difference]: Finished difference Result 2861 states and 10569 transitions. [2021-05-21 20:23:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:26,038 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 [2021-05-21 20:23:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:26,043 INFO L225 Difference]: With dead ends: 2861 [2021-05-21 20:23:26,043 INFO L226 Difference]: Without dead ends: 2678 [2021-05-21 20:23:26,044 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 [2021-05-21 20:23:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2021-05-21 20:23:26,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1448. [2021-05-21 20:23:26,077 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) [2021-05-21 20:23:26,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5703 transitions. [2021-05-21 20:23:26,080 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5703 transitions. Word has length 25 [2021-05-21 20:23:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:26,080 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5703 transitions. [2021-05-21 20:23:26,080 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) [2021-05-21 20:23:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5703 transitions. [2021-05-21 20:23:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:26,082 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:26,082 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] [2021-05-21 20:23:26,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-05-21 20:23:26,082 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]=== [2021-05-21 20:23:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:26,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1933437059, now seen corresponding path program 310 times [2021-05-21 20:23:26,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:26,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203370517] [2021-05-21 20:23:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:26,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:26,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203370517] [2021-05-21 20:23:26,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203370517] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:26,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:26,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:26,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660738269] [2021-05-21 20:23:26,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:26,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:26,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:26,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:26,178 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) [2021-05-21 20:23:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:26,230 INFO L93 Difference]: Finished difference Result 2900 states and 10672 transitions. [2021-05-21 20:23:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:26,230 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 [2021-05-21 20:23:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:26,235 INFO L225 Difference]: With dead ends: 2900 [2021-05-21 20:23:26,235 INFO L226 Difference]: Without dead ends: 2634 [2021-05-21 20:23:26,235 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 [2021-05-21 20:23:26,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2021-05-21 20:23:26,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1404. [2021-05-21 20:23:26,279 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) [2021-05-21 20:23:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5531 transitions. [2021-05-21 20:23:26,281 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5531 transitions. Word has length 25 [2021-05-21 20:23:26,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:26,281 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5531 transitions. [2021-05-21 20:23:26,281 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) [2021-05-21 20:23:26,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5531 transitions. [2021-05-21 20:23:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:26,283 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:26,283 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:26,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-05-21 20:23:26,283 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]=== [2021-05-21 20:23:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:26,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1668657445, now seen corresponding path program 311 times [2021-05-21 20:23:26,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:26,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099371471] [2021-05-21 20:23:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:26,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:26,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099371471] [2021-05-21 20:23:26,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099371471] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:26,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:26,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:26,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271817689] [2021-05-21 20:23:26,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:26,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:26,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:26,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:26,379 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) [2021-05-21 20:23:26,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:26,441 INFO L93 Difference]: Finished difference Result 2801 states and 10313 transitions. [2021-05-21 20:23:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:26,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:26,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:26,447 INFO L225 Difference]: With dead ends: 2801 [2021-05-21 20:23:26,447 INFO L226 Difference]: Without dead ends: 2626 [2021-05-21 20:23:26,447 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 [2021-05-21 20:23:26,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-05-21 20:23:26,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1444. [2021-05-21 20:23:26,482 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) [2021-05-21 20:23:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5671 transitions. [2021-05-21 20:23:26,484 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5671 transitions. Word has length 25 [2021-05-21 20:23:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:26,484 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5671 transitions. [2021-05-21 20:23:26,484 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) [2021-05-21 20:23:26,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5671 transitions. [2021-05-21 20:23:26,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:26,486 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:26,486 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] [2021-05-21 20:23:26,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-05-21 20:23:26,486 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]=== [2021-05-21 20:23:26,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:26,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1450305859, now seen corresponding path program 312 times [2021-05-21 20:23:26,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:26,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864146331] [2021-05-21 20:23:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:26,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:26,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864146331] [2021-05-21 20:23:26,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864146331] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:26,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:26,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:26,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455914108] [2021-05-21 20:23:26,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:26,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:26,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:26,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:26,580 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) [2021-05-21 20:23:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:26,636 INFO L93 Difference]: Finished difference Result 2753 states and 10113 transitions. [2021-05-21 20:23:26,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:26,636 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 [2021-05-21 20:23:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:26,640 INFO L225 Difference]: With dead ends: 2753 [2021-05-21 20:23:26,641 INFO L226 Difference]: Without dead ends: 2463 [2021-05-21 20:23:26,641 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 [2021-05-21 20:23:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2021-05-21 20:23:26,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 1376. [2021-05-21 20:23:26,673 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) [2021-05-21 20:23:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 5447 transitions. [2021-05-21 20:23:26,675 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 5447 transitions. Word has length 25 [2021-05-21 20:23:26,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:26,675 INFO L482 AbstractCegarLoop]: Abstraction has 1376 states and 5447 transitions. [2021-05-21 20:23:26,675 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) [2021-05-21 20:23:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 5447 transitions. [2021-05-21 20:23:26,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:26,677 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:26,677 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] [2021-05-21 20:23:26,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-05-21 20:23:26,677 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]=== [2021-05-21 20:23:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash -772928521, now seen corresponding path program 313 times [2021-05-21 20:23:26,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:26,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722188546] [2021-05-21 20:23:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:26,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:26,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722188546] [2021-05-21 20:23:26,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722188546] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:26,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:26,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:26,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807421745] [2021-05-21 20:23:26,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:26,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:26,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:26,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:26,759 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) [2021-05-21 20:23:26,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:26,807 INFO L93 Difference]: Finished difference Result 2713 states and 10002 transitions. [2021-05-21 20:23:26,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:26,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:26,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:26,812 INFO L225 Difference]: With dead ends: 2713 [2021-05-21 20:23:26,812 INFO L226 Difference]: Without dead ends: 2554 [2021-05-21 20:23:26,812 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:26,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-05-21 20:23:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1404. [2021-05-21 20:23:26,845 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) [2021-05-21 20:23:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5551 transitions. [2021-05-21 20:23:26,847 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5551 transitions. Word has length 25 [2021-05-21 20:23:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:26,847 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5551 transitions. [2021-05-21 20:23:26,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5551 transitions. [2021-05-21 20:23:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:26,849 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:26,849 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:26,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-05-21 20:23:26,849 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]=== [2021-05-21 20:23:26,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1932104025, now seen corresponding path program 314 times [2021-05-21 20:23:26,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:26,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778648026] [2021-05-21 20:23:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:26,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:26,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778648026] [2021-05-21 20:23:26,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778648026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:26,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:26,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:26,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734013813] [2021-05-21 20:23:26,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:26,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:26,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:26,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:26,933 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) [2021-05-21 20:23:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:26,998 INFO L93 Difference]: Finished difference Result 2743 states and 10095 transitions. [2021-05-21 20:23:26,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:26,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:26,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:27,003 INFO L225 Difference]: With dead ends: 2743 [2021-05-21 20:23:27,003 INFO L226 Difference]: Without dead ends: 2538 [2021-05-21 20:23:27,003 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 [2021-05-21 20:23:27,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2021-05-21 20:23:27,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 1388. [2021-05-21 20:23:27,036 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) [2021-05-21 20:23:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5495 transitions. [2021-05-21 20:23:27,038 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5495 transitions. Word has length 25 [2021-05-21 20:23:27,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:27,038 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5495 transitions. [2021-05-21 20:23:27,038 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) [2021-05-21 20:23:27,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5495 transitions. [2021-05-21 20:23:27,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:27,040 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:27,040 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] [2021-05-21 20:23:27,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-05-21 20:23:27,040 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]=== [2021-05-21 20:23:27,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:27,041 INFO L82 PathProgramCache]: Analyzing trace with hash -979736487, now seen corresponding path program 315 times [2021-05-21 20:23:27,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:27,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238032924] [2021-05-21 20:23:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:27,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:27,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238032924] [2021-05-21 20:23:27,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238032924] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:27,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:27,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:27,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261297277] [2021-05-21 20:23:27,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:27,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:27,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:27,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:27,117 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) [2021-05-21 20:23:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:27,171 INFO L93 Difference]: Finished difference Result 2707 states and 9977 transitions. [2021-05-21 20:23:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:27,172 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 [2021-05-21 20:23:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:27,176 INFO L225 Difference]: With dead ends: 2707 [2021-05-21 20:23:27,176 INFO L226 Difference]: Without dead ends: 2548 [2021-05-21 20:23:27,176 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 79.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:27,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2021-05-21 20:23:27,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 1404. [2021-05-21 20:23:27,209 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) [2021-05-21 20:23:27,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5543 transitions. [2021-05-21 20:23:27,212 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5543 transitions. Word has length 25 [2021-05-21 20:23:27,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:27,212 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5543 transitions. [2021-05-21 20:23:27,212 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) [2021-05-21 20:23:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5543 transitions. [2021-05-21 20:23:27,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:27,214 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:27,214 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] [2021-05-21 20:23:27,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-05-21 20:23:27,214 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]=== [2021-05-21 20:23:27,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:27,214 INFO L82 PathProgramCache]: Analyzing trace with hash 700760153, now seen corresponding path program 316 times [2021-05-21 20:23:27,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:27,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263817748] [2021-05-21 20:23:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:27,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:27,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263817748] [2021-05-21 20:23:27,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263817748] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:27,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:27,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:27,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742255895] [2021-05-21 20:23:27,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:27,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:27,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:27,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:27,288 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) [2021-05-21 20:23:27,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:27,359 INFO L93 Difference]: Finished difference Result 2731 states and 10053 transitions. [2021-05-21 20:23:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:27,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:27,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:27,364 INFO L225 Difference]: With dead ends: 2731 [2021-05-21 20:23:27,364 INFO L226 Difference]: Without dead ends: 2532 [2021-05-21 20:23:27,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:27,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-05-21 20:23:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1388. [2021-05-21 20:23:27,397 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) [2021-05-21 20:23:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5487 transitions. [2021-05-21 20:23:27,399 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5487 transitions. Word has length 25 [2021-05-21 20:23:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:27,399 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5487 transitions. [2021-05-21 20:23:27,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5487 transitions. [2021-05-21 20:23:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:27,401 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:27,401 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:27,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-05-21 20:23:27,401 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]=== [2021-05-21 20:23:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:27,402 INFO L82 PathProgramCache]: Analyzing trace with hash 437425467, now seen corresponding path program 317 times [2021-05-21 20:23:27,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:27,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547864968] [2021-05-21 20:23:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:27,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:27,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547864968] [2021-05-21 20:23:27,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547864968] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:27,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:27,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:27,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339667897] [2021-05-21 20:23:27,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:27,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:27,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:27,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:27,475 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) [2021-05-21 20:23:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:27,541 INFO L93 Difference]: Finished difference Result 2779 states and 10239 transitions. [2021-05-21 20:23:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:27,541 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 [2021-05-21 20:23:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:27,546 INFO L225 Difference]: With dead ends: 2779 [2021-05-21 20:23:27,546 INFO L226 Difference]: Without dead ends: 2590 [2021-05-21 20:23:27,546 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 [2021-05-21 20:23:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-05-21 20:23:27,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 1416. [2021-05-21 20:23:27,582 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) [2021-05-21 20:23:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5575 transitions. [2021-05-21 20:23:27,585 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5575 transitions. Word has length 25 [2021-05-21 20:23:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:27,585 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5575 transitions. [2021-05-21 20:23:27,585 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) [2021-05-21 20:23:27,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5575 transitions. [2021-05-21 20:23:27,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:27,587 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:27,587 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] [2021-05-21 20:23:27,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-05-21 20:23:27,587 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]=== [2021-05-21 20:23:27,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:27,587 INFO L82 PathProgramCache]: Analyzing trace with hash -954719079, now seen corresponding path program 318 times [2021-05-21 20:23:27,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:27,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777056137] [2021-05-21 20:23:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:27,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:27,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777056137] [2021-05-21 20:23:27,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777056137] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:27,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:27,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:27,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068574496] [2021-05-21 20:23:27,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:27,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:27,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:27,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:27,661 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) [2021-05-21 20:23:27,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:27,724 INFO L93 Difference]: Finished difference Result 2773 states and 10194 transitions. [2021-05-21 20:23:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:27,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:27,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:27,729 INFO L225 Difference]: With dead ends: 2773 [2021-05-21 20:23:27,729 INFO L226 Difference]: Without dead ends: 2554 [2021-05-21 20:23:27,729 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 [2021-05-21 20:23:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-05-21 20:23:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1380. [2021-05-21 20:23:27,762 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) [2021-05-21 20:23:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 5463 transitions. [2021-05-21 20:23:27,764 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 5463 transitions. Word has length 25 [2021-05-21 20:23:27,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:27,764 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 5463 transitions. [2021-05-21 20:23:27,764 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) [2021-05-21 20:23:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 5463 transitions. [2021-05-21 20:23:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:27,766 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:27,766 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] [2021-05-21 20:23:27,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-05-21 20:23:27,766 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]=== [2021-05-21 20:23:27,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:27,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1253830567, now seen corresponding path program 319 times [2021-05-21 20:23:27,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:27,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413483687] [2021-05-21 20:23:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:27,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:27,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413483687] [2021-05-21 20:23:27,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413483687] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:27,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:27,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:27,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438400814] [2021-05-21 20:23:27,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:27,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:27,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:27,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:27,856 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) [2021-05-21 20:23:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:27,905 INFO L93 Difference]: Finished difference Result 2677 states and 9854 transitions. [2021-05-21 20:23:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:27,905 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 [2021-05-21 20:23:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:27,909 INFO L225 Difference]: With dead ends: 2677 [2021-05-21 20:23:27,909 INFO L226 Difference]: Without dead ends: 2518 [2021-05-21 20:23:27,910 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 [2021-05-21 20:23:27,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-05-21 20:23:27,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1404. [2021-05-21 20:23:27,942 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) [2021-05-21 20:23:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5547 transitions. [2021-05-21 20:23:27,945 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5547 transitions. Word has length 25 [2021-05-21 20:23:27,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:27,945 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5547 transitions. [2021-05-21 20:23:27,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:27,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5547 transitions. [2021-05-21 20:23:27,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:27,947 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:27,947 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:27,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-05-21 20:23:27,947 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]=== [2021-05-21 20:23:27,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:27,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1451201979, now seen corresponding path program 320 times [2021-05-21 20:23:27,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:27,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55310625] [2021-05-21 20:23:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:28,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:28,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55310625] [2021-05-21 20:23:28,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55310625] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:28,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:28,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:28,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420612135] [2021-05-21 20:23:28,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:28,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:28,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:28,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:28,036 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) [2021-05-21 20:23:28,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:28,122 INFO L93 Difference]: Finished difference Result 2707 states and 9947 transitions. [2021-05-21 20:23:28,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:28,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:28,126 INFO L225 Difference]: With dead ends: 2707 [2021-05-21 20:23:28,127 INFO L226 Difference]: Without dead ends: 2502 [2021-05-21 20:23:28,127 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 [2021-05-21 20:23:28,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2021-05-21 20:23:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 1388. [2021-05-21 20:23:28,159 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) [2021-05-21 20:23:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5491 transitions. [2021-05-21 20:23:28,162 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5491 transitions. Word has length 25 [2021-05-21 20:23:28,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:28,162 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5491 transitions. [2021-05-21 20:23:28,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:28,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5491 transitions. [2021-05-21 20:23:28,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:28,175 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:28,175 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:28,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-05-21 20:23:28,175 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]=== [2021-05-21 20:23:28,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:28,176 INFO L82 PathProgramCache]: Analyzing trace with hash 65019865, now seen corresponding path program 321 times [2021-05-21 20:23:28,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:28,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596131720] [2021-05-21 20:23:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:28,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:28,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596131720] [2021-05-21 20:23:28,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596131720] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:28,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:28,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:28,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816878613] [2021-05-21 20:23:28,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:28,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:28,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:28,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:28,258 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) [2021-05-21 20:23:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:28,310 INFO L93 Difference]: Finished difference Result 2631 states and 9689 transitions. [2021-05-21 20:23:28,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:28,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:28,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:28,315 INFO L225 Difference]: With dead ends: 2631 [2021-05-21 20:23:28,315 INFO L226 Difference]: Without dead ends: 2472 [2021-05-21 20:23:28,315 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 [2021-05-21 20:23:28,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2021-05-21 20:23:28,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1404. [2021-05-21 20:23:28,347 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) [2021-05-21 20:23:28,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5539 transitions. [2021-05-21 20:23:28,350 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5539 transitions. Word has length 25 [2021-05-21 20:23:28,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:28,350 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5539 transitions. [2021-05-21 20:23:28,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5539 transitions. [2021-05-21 20:23:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:28,352 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:28,352 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:28,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-05-21 20:23:28,352 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]=== [2021-05-21 20:23:28,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:28,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1877252135, now seen corresponding path program 322 times [2021-05-21 20:23:28,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:28,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930167190] [2021-05-21 20:23:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:28,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:28,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930167190] [2021-05-21 20:23:28,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930167190] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:28,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:28,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:28,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585167242] [2021-05-21 20:23:28,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:28,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:28,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:28,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:28,437 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) [2021-05-21 20:23:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:28,502 INFO L93 Difference]: Finished difference Result 2519 states and 9352 transitions. [2021-05-21 20:23:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:28,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:28,507 INFO L225 Difference]: With dead ends: 2519 [2021-05-21 20:23:28,507 INFO L226 Difference]: Without dead ends: 2328 [2021-05-21 20:23:28,507 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 [2021-05-21 20:23:28,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-05-21 20:23:28,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 1388. [2021-05-21 20:23:28,538 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) [2021-05-21 20:23:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5483 transitions. [2021-05-21 20:23:28,541 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5483 transitions. Word has length 25 [2021-05-21 20:23:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:28,541 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5483 transitions. [2021-05-21 20:23:28,541 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) [2021-05-21 20:23:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5483 transitions. [2021-05-21 20:23:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:28,543 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:28,543 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] [2021-05-21 20:23:28,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-05-21 20:23:28,543 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]=== [2021-05-21 20:23:28,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:28,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1482181819, now seen corresponding path program 323 times [2021-05-21 20:23:28,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:28,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070106542] [2021-05-21 20:23:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:28,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:28,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070106542] [2021-05-21 20:23:28,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070106542] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:28,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:28,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:28,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950698024] [2021-05-21 20:23:28,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:28,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:28,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:28,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:28,646 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) [2021-05-21 20:23:28,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:28,707 INFO L93 Difference]: Finished difference Result 2669 states and 9826 transitions. [2021-05-21 20:23:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:28,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:28,711 INFO L225 Difference]: With dead ends: 2669 [2021-05-21 20:23:28,711 INFO L226 Difference]: Without dead ends: 2480 [2021-05-21 20:23:28,712 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2021-05-21 20:23:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 1412. [2021-05-21 20:23:28,744 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) [2021-05-21 20:23:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5559 transitions. [2021-05-21 20:23:28,746 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5559 transitions. Word has length 25 [2021-05-21 20:23:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:28,746 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5559 transitions. [2021-05-21 20:23:28,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5559 transitions. [2021-05-21 20:23:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:28,748 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:28,748 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:28,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-05-21 20:23:28,748 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]=== [2021-05-21 20:23:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:28,749 INFO L82 PathProgramCache]: Analyzing trace with hash 741229721, now seen corresponding path program 324 times [2021-05-21 20:23:28,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:28,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394971888] [2021-05-21 20:23:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:28,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:28,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394971888] [2021-05-21 20:23:28,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394971888] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:28,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:28,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:28,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309276730] [2021-05-21 20:23:28,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:28,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:28,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:28,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:28,840 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) [2021-05-21 20:23:28,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:28,903 INFO L93 Difference]: Finished difference Result 2527 states and 9372 transitions. [2021-05-21 20:23:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:28,903 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 [2021-05-21 20:23:28,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:28,907 INFO L225 Difference]: With dead ends: 2527 [2021-05-21 20:23:28,907 INFO L226 Difference]: Without dead ends: 2320 [2021-05-21 20:23:28,907 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 [2021-05-21 20:23:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-05-21 20:23:28,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1380. [2021-05-21 20:23:28,938 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) [2021-05-21 20:23:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 5459 transitions. [2021-05-21 20:23:28,941 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 5459 transitions. Word has length 25 [2021-05-21 20:23:28,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:28,941 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 5459 transitions. [2021-05-21 20:23:28,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:28,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 5459 transitions. [2021-05-21 20:23:28,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:28,942 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:28,942 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:28,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-05-21 20:23:28,943 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]=== [2021-05-21 20:23:28,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:28,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1448213435, now seen corresponding path program 325 times [2021-05-21 20:23:28,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:28,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028054162] [2021-05-21 20:23:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:29,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:29,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028054162] [2021-05-21 20:23:29,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028054162] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:29,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:29,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:29,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257749791] [2021-05-21 20:23:29,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:29,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:29,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:29,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:29,022 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) [2021-05-21 20:23:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:29,070 INFO L93 Difference]: Finished difference Result 2633 states and 9704 transitions. [2021-05-21 20:23:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:29,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:29,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:29,075 INFO L225 Difference]: With dead ends: 2633 [2021-05-21 20:23:29,075 INFO L226 Difference]: Without dead ends: 2474 [2021-05-21 20:23:29,075 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 [2021-05-21 20:23:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-05-21 20:23:29,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1404. [2021-05-21 20:23:29,107 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) [2021-05-21 20:23:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5543 transitions. [2021-05-21 20:23:29,109 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5543 transitions. Word has length 25 [2021-05-21 20:23:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:29,110 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5543 transitions. [2021-05-21 20:23:29,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5543 transitions. [2021-05-21 20:23:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:29,111 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:29,111 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] [2021-05-21 20:23:29,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-05-21 20:23:29,111 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]=== [2021-05-21 20:23:29,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:29,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1166257221, now seen corresponding path program 326 times [2021-05-21 20:23:29,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:29,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172467337] [2021-05-21 20:23:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:29,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:29,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172467337] [2021-05-21 20:23:29,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172467337] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:29,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:29,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:29,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185969963] [2021-05-21 20:23:29,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:29,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:29,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:29,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:29,189 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) [2021-05-21 20:23:29,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:29,251 INFO L93 Difference]: Finished difference Result 2657 states and 9780 transitions. [2021-05-21 20:23:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:29,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:29,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:29,255 INFO L225 Difference]: With dead ends: 2657 [2021-05-21 20:23:29,255 INFO L226 Difference]: Without dead ends: 2458 [2021-05-21 20:23:29,256 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:29,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2021-05-21 20:23:29,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1388. [2021-05-21 20:23:29,287 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) [2021-05-21 20:23:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5487 transitions. [2021-05-21 20:23:29,290 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5487 transitions. Word has length 25 [2021-05-21 20:23:29,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:29,290 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5487 transitions. [2021-05-21 20:23:29,290 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) [2021-05-21 20:23:29,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5487 transitions. [2021-05-21 20:23:29,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:29,292 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:29,292 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] [2021-05-21 20:23:29,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-05-21 20:23:29,292 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]=== [2021-05-21 20:23:29,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:29,292 INFO L82 PathProgramCache]: Analyzing trace with hash 601416473, now seen corresponding path program 327 times [2021-05-21 20:23:29,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:29,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999263408] [2021-05-21 20:23:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:29,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:29,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999263408] [2021-05-21 20:23:29,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999263408] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:29,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:29,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:29,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254357053] [2021-05-21 20:23:29,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:29,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:29,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:29,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:29,370 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) [2021-05-21 20:23:29,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:29,423 INFO L93 Difference]: Finished difference Result 2577 states and 9492 transitions. [2021-05-21 20:23:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:29,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:29,427 INFO L225 Difference]: With dead ends: 2577 [2021-05-21 20:23:29,428 INFO L226 Difference]: Without dead ends: 2418 [2021-05-21 20:23:29,428 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 [2021-05-21 20:23:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2021-05-21 20:23:29,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 1404. [2021-05-21 20:23:29,459 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) [2021-05-21 20:23:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5535 transitions. [2021-05-21 20:23:29,462 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5535 transitions. Word has length 25 [2021-05-21 20:23:29,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:29,462 INFO L482 AbstractCegarLoop]: Abstraction has 1404 states and 5535 transitions. [2021-05-21 20:23:29,462 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5535 transitions. [2021-05-21 20:23:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:29,463 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:29,464 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:29,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-05-21 20:23:29,464 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]=== [2021-05-21 20:23:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:29,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1243755451, now seen corresponding path program 328 times [2021-05-21 20:23:29,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:29,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267695069] [2021-05-21 20:23:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:29,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:29,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267695069] [2021-05-21 20:23:29,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267695069] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:29,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:29,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:29,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370003555] [2021-05-21 20:23:29,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:29,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:29,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:29,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:29,545 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) [2021-05-21 20:23:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:29,605 INFO L93 Difference]: Finished difference Result 2465 states and 9155 transitions. [2021-05-21 20:23:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:29,609 INFO L225 Difference]: With dead ends: 2465 [2021-05-21 20:23:29,609 INFO L226 Difference]: Without dead ends: 2274 [2021-05-21 20:23:29,609 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 [2021-05-21 20:23:29,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2021-05-21 20:23:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1388. [2021-05-21 20:23:29,640 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) [2021-05-21 20:23:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5479 transitions. [2021-05-21 20:23:29,642 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5479 transitions. Word has length 25 [2021-05-21 20:23:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:29,642 INFO L482 AbstractCegarLoop]: Abstraction has 1388 states and 5479 transitions. [2021-05-21 20:23:29,642 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) [2021-05-21 20:23:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5479 transitions. [2021-05-21 20:23:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:29,644 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:29,644 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] [2021-05-21 20:23:29,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-05-21 20:23:29,644 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]=== [2021-05-21 20:23:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:29,645 INFO L82 PathProgramCache]: Analyzing trace with hash 621124539, now seen corresponding path program 329 times [2021-05-21 20:23:29,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:29,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192447629] [2021-05-21 20:23:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:29,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:29,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192447629] [2021-05-21 20:23:29,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192447629] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:29,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:29,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:29,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064807769] [2021-05-21 20:23:29,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:29,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:29,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:29,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:29,720 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) [2021-05-21 20:23:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:29,785 INFO L93 Difference]: Finished difference Result 2481 states and 9227 transitions. [2021-05-21 20:23:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:29,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:29,789 INFO L225 Difference]: With dead ends: 2481 [2021-05-21 20:23:29,789 INFO L226 Difference]: Without dead ends: 2298 [2021-05-21 20:23:29,789 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 [2021-05-21 20:23:29,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-05-21 20:23:29,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1412. [2021-05-21 20:23:29,820 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) [2021-05-21 20:23:29,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5555 transitions. [2021-05-21 20:23:29,822 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5555 transitions. Word has length 25 [2021-05-21 20:23:29,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:29,822 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5555 transitions. [2021-05-21 20:23:29,822 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) [2021-05-21 20:23:29,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5555 transitions. [2021-05-21 20:23:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:29,824 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:29,824 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] [2021-05-21 20:23:29,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-05-21 20:23:29,824 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]=== [2021-05-21 20:23:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:29,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1422212455, now seen corresponding path program 330 times [2021-05-21 20:23:29,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:29,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868063250] [2021-05-21 20:23:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:29,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:29,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868063250] [2021-05-21 20:23:29,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868063250] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:29,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:29,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:29,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109502744] [2021-05-21 20:23:29,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:29,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:29,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:29,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:29,914 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) [2021-05-21 20:23:29,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:29,986 INFO L93 Difference]: Finished difference Result 2297 states and 8614 transitions. [2021-05-21 20:23:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:29,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:29,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:29,991 INFO L225 Difference]: With dead ends: 2297 [2021-05-21 20:23:29,991 INFO L226 Difference]: Without dead ends: 2090 [2021-05-21 20:23:29,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-05-21 20:23:30,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1380. [2021-05-21 20:23:30,022 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) [2021-05-21 20:23:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 5455 transitions. [2021-05-21 20:23:30,024 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 5455 transitions. Word has length 25 [2021-05-21 20:23:30,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:30,024 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 5455 transitions. [2021-05-21 20:23:30,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 5455 transitions. [2021-05-21 20:23:30,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:30,026 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:30,026 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:30,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-05-21 20:23:30,026 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]=== [2021-05-21 20:23:30,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:30,026 INFO L82 PathProgramCache]: Analyzing trace with hash -2122649571, now seen corresponding path program 331 times [2021-05-21 20:23:30,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:30,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243085661] [2021-05-21 20:23:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:30,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:30,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:30,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243085661] [2021-05-21 20:23:30,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243085661] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:30,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:30,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:30,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900326478] [2021-05-21 20:23:30,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:30,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:30,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:30,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:30,106 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) [2021-05-21 20:23:30,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:30,174 INFO L93 Difference]: Finished difference Result 2717 states and 10026 transitions. [2021-05-21 20:23:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:30,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:30,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:30,179 INFO L225 Difference]: With dead ends: 2717 [2021-05-21 20:23:30,179 INFO L226 Difference]: Without dead ends: 2528 [2021-05-21 20:23:30,179 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 [2021-05-21 20:23:30,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2021-05-21 20:23:30,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1420. [2021-05-21 20:23:30,211 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) [2021-05-21 20:23:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5599 transitions. [2021-05-21 20:23:30,213 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5599 transitions. Word has length 25 [2021-05-21 20:23:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:30,213 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5599 transitions. [2021-05-21 20:23:30,214 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) [2021-05-21 20:23:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5599 transitions. [2021-05-21 20:23:30,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:30,215 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:30,215 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] [2021-05-21 20:23:30,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-05-21 20:23:30,215 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]=== [2021-05-21 20:23:30,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:30,216 INFO L82 PathProgramCache]: Analyzing trace with hash 780173179, now seen corresponding path program 332 times [2021-05-21 20:23:30,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:30,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256934256] [2021-05-21 20:23:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:30,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:30,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256934256] [2021-05-21 20:23:30,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256934256] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:30,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:30,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:30,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266371729] [2021-05-21 20:23:30,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:30,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:30,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:30,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:30,289 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) [2021-05-21 20:23:30,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:30,346 INFO L93 Difference]: Finished difference Result 2711 states and 9981 transitions. [2021-05-21 20:23:30,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:30,347 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 [2021-05-21 20:23:30,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:30,351 INFO L225 Difference]: With dead ends: 2711 [2021-05-21 20:23:30,351 INFO L226 Difference]: Without dead ends: 2500 [2021-05-21 20:23:30,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:30,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2021-05-21 20:23:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1392. [2021-05-21 20:23:30,383 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) [2021-05-21 20:23:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5499 transitions. [2021-05-21 20:23:30,386 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5499 transitions. Word has length 25 [2021-05-21 20:23:30,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:30,386 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5499 transitions. [2021-05-21 20:23:30,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:30,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5499 transitions. [2021-05-21 20:23:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:30,388 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:30,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:30,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-05-21 20:23:30,388 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]=== [2021-05-21 20:23:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:30,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1325520763, now seen corresponding path program 333 times [2021-05-21 20:23:30,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:30,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369502848] [2021-05-21 20:23:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:30,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:30,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369502848] [2021-05-21 20:23:30,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369502848] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:30,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:30,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:30,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356805801] [2021-05-21 20:23:30,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:30,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:30,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:30,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:30,471 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) [2021-05-21 20:23:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:30,530 INFO L93 Difference]: Finished difference Result 2619 states and 9649 transitions. [2021-05-21 20:23:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:30,531 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 [2021-05-21 20:23:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:30,535 INFO L225 Difference]: With dead ends: 2619 [2021-05-21 20:23:30,535 INFO L226 Difference]: Without dead ends: 2430 [2021-05-21 20:23:30,535 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 [2021-05-21 20:23:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2021-05-21 20:23:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1416. [2021-05-21 20:23:30,567 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) [2021-05-21 20:23:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5575 transitions. [2021-05-21 20:23:30,569 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5575 transitions. Word has length 25 [2021-05-21 20:23:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:30,569 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5575 transitions. [2021-05-21 20:23:30,569 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) [2021-05-21 20:23:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5575 transitions. [2021-05-21 20:23:30,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:30,571 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:30,571 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] [2021-05-21 20:23:30,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-05-21 20:23:30,571 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]=== [2021-05-21 20:23:30,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:30,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1125787653, now seen corresponding path program 334 times [2021-05-21 20:23:30,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:30,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949470847] [2021-05-21 20:23:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:30,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:30,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949470847] [2021-05-21 20:23:30,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949470847] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:30,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:30,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:30,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139876298] [2021-05-21 20:23:30,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:30,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:30,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:30,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:30,656 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) [2021-05-21 20:23:30,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:30,718 INFO L93 Difference]: Finished difference Result 2477 states and 9195 transitions. [2021-05-21 20:23:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:30,719 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 [2021-05-21 20:23:30,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:30,723 INFO L225 Difference]: With dead ends: 2477 [2021-05-21 20:23:30,723 INFO L226 Difference]: Without dead ends: 2278 [2021-05-21 20:23:30,723 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 [2021-05-21 20:23:30,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2021-05-21 20:23:30,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 1392. [2021-05-21 20:23:30,753 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) [2021-05-21 20:23:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5487 transitions. [2021-05-21 20:23:30,756 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5487 transitions. Word has length 25 [2021-05-21 20:23:30,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:30,756 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5487 transitions. [2021-05-21 20:23:30,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5487 transitions. [2021-05-21 20:23:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:30,758 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:30,758 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:30,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-05-21 20:23:30,758 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]=== [2021-05-21 20:23:30,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:30,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1689778137, now seen corresponding path program 335 times [2021-05-21 20:23:30,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:30,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77772903] [2021-05-21 20:23:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:30,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:30,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77772903] [2021-05-21 20:23:30,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77772903] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:30,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:30,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:30,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679533821] [2021-05-21 20:23:30,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:30,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:30,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:30,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:30,839 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) [2021-05-21 20:23:30,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:30,908 INFO L93 Difference]: Finished difference Result 2485 states and 9235 transitions. [2021-05-21 20:23:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:30,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:30,912 INFO L225 Difference]: With dead ends: 2485 [2021-05-21 20:23:30,912 INFO L226 Difference]: Without dead ends: 2302 [2021-05-21 20:23:30,912 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 [2021-05-21 20:23:30,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2021-05-21 20:23:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1416. [2021-05-21 20:23:30,944 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) [2021-05-21 20:23:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5563 transitions. [2021-05-21 20:23:30,946 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5563 transitions. Word has length 25 [2021-05-21 20:23:30,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:30,946 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 5563 transitions. [2021-05-21 20:23:30,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:30,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5563 transitions. [2021-05-21 20:23:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:30,948 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:30,948 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:30,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-05-21 20:23:30,948 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]=== [2021-05-21 20:23:30,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:30,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1524126533, now seen corresponding path program 336 times [2021-05-21 20:23:30,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:30,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063900278] [2021-05-21 20:23:30,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:31,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:31,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063900278] [2021-05-21 20:23:31,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063900278] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:31,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:31,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:31,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538653753] [2021-05-21 20:23:31,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:31,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:31,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:31,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:31,034 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) [2021-05-21 20:23:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:31,106 INFO L93 Difference]: Finished difference Result 2301 states and 8622 transitions. [2021-05-21 20:23:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:31,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:31,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:31,111 INFO L225 Difference]: With dead ends: 2301 [2021-05-21 20:23:31,111 INFO L226 Difference]: Without dead ends: 2086 [2021-05-21 20:23:31,111 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 [2021-05-21 20:23:31,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2021-05-21 20:23:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1376. [2021-05-21 20:23:31,140 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) [2021-05-21 20:23:31,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 5445 transitions. [2021-05-21 20:23:31,143 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 5445 transitions. Word has length 25 [2021-05-21 20:23:31,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:31,143 INFO L482 AbstractCegarLoop]: Abstraction has 1376 states and 5445 transitions. [2021-05-21 20:23:31,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 5445 transitions. [2021-05-21 20:23:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:31,145 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:31,145 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:31,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-05-21 20:23:31,145 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]=== [2021-05-21 20:23:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:31,145 INFO L82 PathProgramCache]: Analyzing trace with hash 203920639, now seen corresponding path program 337 times [2021-05-21 20:23:31,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:31,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320789322] [2021-05-21 20:23:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:31,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:31,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320789322] [2021-05-21 20:23:31,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320789322] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:31,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:31,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:31,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759550123] [2021-05-21 20:23:31,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:31,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:31,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:31,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:31,218 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) [2021-05-21 20:23:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:31,285 INFO L93 Difference]: Finished difference Result 3065 states and 11402 transitions. [2021-05-21 20:23:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:31,286 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 [2021-05-21 20:23:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:31,291 INFO L225 Difference]: With dead ends: 3065 [2021-05-21 20:23:31,291 INFO L226 Difference]: Without dead ends: 2876 [2021-05-21 20:23:31,291 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2021-05-21 20:23:31,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1430. [2021-05-21 20:23:31,327 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) [2021-05-21 20:23:31,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 5656 transitions. [2021-05-21 20:23:31,329 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 5656 transitions. Word has length 25 [2021-05-21 20:23:31,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:31,329 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 5656 transitions. [2021-05-21 20:23:31,330 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) [2021-05-21 20:23:31,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 5656 transitions. [2021-05-21 20:23:31,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:31,331 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:31,331 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] [2021-05-21 20:23:31,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-05-21 20:23:31,332 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]=== [2021-05-21 20:23:31,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:31,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1188223907, now seen corresponding path program 338 times [2021-05-21 20:23:31,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:31,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845268882] [2021-05-21 20:23:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:31,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:31,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845268882] [2021-05-21 20:23:31,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845268882] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:31,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:31,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:31,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278016718] [2021-05-21 20:23:31,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:31,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:31,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:31,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:31,406 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) [2021-05-21 20:23:31,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:31,469 INFO L93 Difference]: Finished difference Result 3059 states and 11357 transitions. [2021-05-21 20:23:31,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:31,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:31,475 INFO L225 Difference]: With dead ends: 3059 [2021-05-21 20:23:31,475 INFO L226 Difference]: Without dead ends: 2848 [2021-05-21 20:23:31,475 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:31,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2021-05-21 20:23:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1402. [2021-05-21 20:23:31,510 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) [2021-05-21 20:23:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5556 transitions. [2021-05-21 20:23:31,512 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5556 transitions. Word has length 25 [2021-05-21 20:23:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:31,512 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 5556 transitions. [2021-05-21 20:23:31,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5556 transitions. [2021-05-21 20:23:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:31,514 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:31,514 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:31,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-05-21 20:23:31,514 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]=== [2021-05-21 20:23:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash -642876323, now seen corresponding path program 339 times [2021-05-21 20:23:31,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:31,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514883366] [2021-05-21 20:23:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:31,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:31,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514883366] [2021-05-21 20:23:31,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514883366] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:31,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:31,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:31,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428361989] [2021-05-21 20:23:31,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:31,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:31,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:31,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:31,601 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) [2021-05-21 20:23:31,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:31,668 INFO L93 Difference]: Finished difference Result 3053 states and 11346 transitions. [2021-05-21 20:23:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:31,668 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 [2021-05-21 20:23:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:31,673 INFO L225 Difference]: With dead ends: 3053 [2021-05-21 20:23:31,673 INFO L226 Difference]: Without dead ends: 2864 [2021-05-21 20:23:31,673 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 [2021-05-21 20:23:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2021-05-21 20:23:31,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1426. [2021-05-21 20:23:31,708 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) [2021-05-21 20:23:31,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 5632 transitions. [2021-05-21 20:23:31,711 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 5632 transitions. Word has length 25 [2021-05-21 20:23:31,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:31,711 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 5632 transitions. [2021-05-21 20:23:31,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:31,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 5632 transitions. [2021-05-21 20:23:31,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:31,713 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:31,713 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:31,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-05-21 20:23:31,713 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]=== [2021-05-21 20:23:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:31,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1200782557, now seen corresponding path program 340 times [2021-05-21 20:23:31,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:31,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538639202] [2021-05-21 20:23:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:31,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:31,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538639202] [2021-05-21 20:23:31,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538639202] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:31,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:31,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:31,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231690386] [2021-05-21 20:23:31,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:31,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:31,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:31,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:31,823 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) [2021-05-21 20:23:31,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:31,893 INFO L93 Difference]: Finished difference Result 3039 states and 11277 transitions. [2021-05-21 20:23:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:31,893 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 [2021-05-21 20:23:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:31,898 INFO L225 Difference]: With dead ends: 3039 [2021-05-21 20:23:31,899 INFO L226 Difference]: Without dead ends: 2840 [2021-05-21 20:23:31,899 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:31,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2021-05-21 20:23:31,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1402. [2021-05-21 20:23:31,933 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) [2021-05-21 20:23:31,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5544 transitions. [2021-05-21 20:23:31,936 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5544 transitions. Word has length 25 [2021-05-21 20:23:31,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:31,936 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 5544 transitions. [2021-05-21 20:23:31,936 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) [2021-05-21 20:23:31,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5544 transitions. [2021-05-21 20:23:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:31,938 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:31,938 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] [2021-05-21 20:23:31,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-05-21 20:23:31,938 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]=== [2021-05-21 20:23:31,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:31,938 INFO L82 PathProgramCache]: Analyzing trace with hash -278618949, now seen corresponding path program 341 times [2021-05-21 20:23:31,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:31,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353801055] [2021-05-21 20:23:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:32,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:32,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353801055] [2021-05-21 20:23:32,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353801055] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:32,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:32,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:32,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395797260] [2021-05-21 20:23:32,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:32,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:32,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:32,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:32,026 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) [2021-05-21 20:23:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:32,105 INFO L93 Difference]: Finished difference Result 3041 states and 11300 transitions. [2021-05-21 20:23:32,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:32,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:32,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:32,112 INFO L225 Difference]: With dead ends: 3041 [2021-05-21 20:23:32,112 INFO L226 Difference]: Without dead ends: 2858 [2021-05-21 20:23:32,112 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2021-05-21 20:23:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 1426. [2021-05-21 20:23:32,158 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) [2021-05-21 20:23:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 5620 transitions. [2021-05-21 20:23:32,160 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 5620 transitions. Word has length 25 [2021-05-21 20:23:32,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:32,160 INFO L482 AbstractCegarLoop]: Abstraction has 1426 states and 5620 transitions. [2021-05-21 20:23:32,161 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) [2021-05-21 20:23:32,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 5620 transitions. [2021-05-21 20:23:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:32,162 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:32,162 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] [2021-05-21 20:23:32,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-05-21 20:23:32,162 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]=== [2021-05-21 20:23:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:32,163 INFO L82 PathProgramCache]: Analyzing trace with hash 802443677, now seen corresponding path program 342 times [2021-05-21 20:23:32,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:32,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563488160] [2021-05-21 20:23:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:32,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:32,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563488160] [2021-05-21 20:23:32,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563488160] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:32,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:32,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:32,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904299302] [2021-05-21 20:23:32,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:32,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:32,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:32,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:32,257 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) [2021-05-21 20:23:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:32,325 INFO L93 Difference]: Finished difference Result 3033 states and 11248 transitions. [2021-05-21 20:23:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:32,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:32,331 INFO L225 Difference]: With dead ends: 3033 [2021-05-21 20:23:32,331 INFO L226 Difference]: Without dead ends: 2822 [2021-05-21 20:23:32,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2021-05-21 20:23:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 1390. [2021-05-21 20:23:32,366 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) [2021-05-21 20:23:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5506 transitions. [2021-05-21 20:23:32,369 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5506 transitions. Word has length 25 [2021-05-21 20:23:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:32,369 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5506 transitions. [2021-05-21 20:23:32,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:32,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5506 transitions. [2021-05-21 20:23:32,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:32,370 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:32,370 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] [2021-05-21 20:23:32,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-05-21 20:23:32,371 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]=== [2021-05-21 20:23:32,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:32,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1759434275, now seen corresponding path program 343 times [2021-05-21 20:23:32,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:32,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379162409] [2021-05-21 20:23:32,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:32,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:32,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379162409] [2021-05-21 20:23:32,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379162409] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:32,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:32,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:32,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251490324] [2021-05-21 20:23:32,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:32,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:32,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:32,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:32,444 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) [2021-05-21 20:23:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:32,512 INFO L93 Difference]: Finished difference Result 3096 states and 11479 transitions. [2021-05-21 20:23:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:32,513 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 [2021-05-21 20:23:32,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:32,518 INFO L225 Difference]: With dead ends: 3096 [2021-05-21 20:23:32,518 INFO L226 Difference]: Without dead ends: 2907 [2021-05-21 20:23:32,518 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:32,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2021-05-21 20:23:32,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1448. [2021-05-21 20:23:32,554 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) [2021-05-21 20:23:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5723 transitions. [2021-05-21 20:23:32,556 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5723 transitions. Word has length 25 [2021-05-21 20:23:32,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:32,556 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5723 transitions. [2021-05-21 20:23:32,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:32,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5723 transitions. [2021-05-21 20:23:32,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:32,558 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:32,558 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:32,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-05-21 20:23:32,558 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]=== [2021-05-21 20:23:32,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:32,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1143388475, now seen corresponding path program 344 times [2021-05-21 20:23:32,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:32,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817689723] [2021-05-21 20:23:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:32,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:32,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817689723] [2021-05-21 20:23:32,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817689723] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:32,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:32,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:32,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850546269] [2021-05-21 20:23:32,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:32,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:32,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:32,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:32,633 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) [2021-05-21 20:23:32,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:32,700 INFO L93 Difference]: Finished difference Result 3090 states and 11434 transitions. [2021-05-21 20:23:32,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:32,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:32,705 INFO L225 Difference]: With dead ends: 3090 [2021-05-21 20:23:32,705 INFO L226 Difference]: Without dead ends: 2879 [2021-05-21 20:23:32,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:32,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-05-21 20:23:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1420. [2021-05-21 20:23:32,741 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) [2021-05-21 20:23:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5621 transitions. [2021-05-21 20:23:32,743 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5621 transitions. Word has length 25 [2021-05-21 20:23:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:32,743 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5621 transitions. [2021-05-21 20:23:32,743 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) [2021-05-21 20:23:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5621 transitions. [2021-05-21 20:23:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:32,745 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:32,745 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] [2021-05-21 20:23:32,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-05-21 20:23:32,745 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]=== [2021-05-21 20:23:32,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:32,745 INFO L82 PathProgramCache]: Analyzing trace with hash 628646365, now seen corresponding path program 345 times [2021-05-21 20:23:32,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:32,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587286446] [2021-05-21 20:23:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:32,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:32,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587286446] [2021-05-21 20:23:32,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587286446] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:32,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:32,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:32,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144172160] [2021-05-21 20:23:32,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:32,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:32,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:32,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:32,820 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) [2021-05-21 20:23:32,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:32,883 INFO L93 Difference]: Finished difference Result 3170 states and 11718 transitions. [2021-05-21 20:23:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:32,883 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 [2021-05-21 20:23:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:32,889 INFO L225 Difference]: With dead ends: 3170 [2021-05-21 20:23:32,889 INFO L226 Difference]: Without dead ends: 2981 [2021-05-21 20:23:32,889 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 [2021-05-21 20:23:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2021-05-21 20:23:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1483. [2021-05-21 20:23:32,926 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) [2021-05-21 20:23:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 5828 transitions. [2021-05-21 20:23:32,929 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 5828 transitions. Word has length 25 [2021-05-21 20:23:32,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:32,929 INFO L482 AbstractCegarLoop]: Abstraction has 1483 states and 5828 transitions. [2021-05-21 20:23:32,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:32,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 5828 transitions. [2021-05-21 20:23:32,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:32,931 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:32,931 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:32,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-05-21 20:23:32,931 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]=== [2021-05-21 20:23:32,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:32,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1360728669, now seen corresponding path program 346 times [2021-05-21 20:23:32,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:32,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512842735] [2021-05-21 20:23:32,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:33,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:33,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512842735] [2021-05-21 20:23:33,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512842735] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:33,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:33,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:33,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273892655] [2021-05-21 20:23:33,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:33,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:33,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:33,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:33,006 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) [2021-05-21 20:23:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:33,056 INFO L93 Difference]: Finished difference Result 3203 states and 11801 transitions. [2021-05-21 20:23:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:33,056 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 [2021-05-21 20:23:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:33,062 INFO L225 Difference]: With dead ends: 3203 [2021-05-21 20:23:33,062 INFO L226 Difference]: Without dead ends: 2918 [2021-05-21 20:23:33,063 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:33,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2021-05-21 20:23:33,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1420. [2021-05-21 20:23:33,098 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) [2021-05-21 20:23:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5591 transitions. [2021-05-21 20:23:33,101 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5591 transitions. Word has length 25 [2021-05-21 20:23:33,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:33,101 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5591 transitions. [2021-05-21 20:23:33,101 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) [2021-05-21 20:23:33,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5591 transitions. [2021-05-21 20:23:33,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:33,103 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:33,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:33,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-05-21 20:23:33,103 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]=== [2021-05-21 20:23:33,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:33,103 INFO L82 PathProgramCache]: Analyzing trace with hash 992903739, now seen corresponding path program 347 times [2021-05-21 20:23:33,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:33,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130856663] [2021-05-21 20:23:33,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:33,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:33,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130856663] [2021-05-21 20:23:33,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130856663] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:33,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:33,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:33,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008241234] [2021-05-21 20:23:33,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:33,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:33,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:33,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:33,188 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) [2021-05-21 20:23:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:33,245 INFO L93 Difference]: Finished difference Result 3139 states and 11596 transitions. [2021-05-21 20:23:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:33,245 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 [2021-05-21 20:23:33,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:33,251 INFO L225 Difference]: With dead ends: 3139 [2021-05-21 20:23:33,251 INFO L226 Difference]: Without dead ends: 2956 [2021-05-21 20:23:33,251 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 [2021-05-21 20:23:33,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-05-21 20:23:33,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1464. [2021-05-21 20:23:33,287 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) [2021-05-21 20:23:33,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5743 transitions. [2021-05-21 20:23:33,290 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5743 transitions. Word has length 25 [2021-05-21 20:23:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:33,290 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5743 transitions. [2021-05-21 20:23:33,290 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) [2021-05-21 20:23:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5743 transitions. [2021-05-21 20:23:33,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:33,292 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:33,292 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] [2021-05-21 20:23:33,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-05-21 20:23:33,292 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]=== [2021-05-21 20:23:33,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:33,292 INFO L82 PathProgramCache]: Analyzing trace with hash -76615267, now seen corresponding path program 348 times [2021-05-21 20:23:33,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:33,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984541211] [2021-05-21 20:23:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:33,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:33,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984541211] [2021-05-21 20:23:33,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984541211] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:33,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:33,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:33,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278902858] [2021-05-21 20:23:33,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:33,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:33,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:33,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:33,378 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) [2021-05-21 20:23:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:33,425 INFO L93 Difference]: Finished difference Result 3178 states and 11699 transitions. [2021-05-21 20:23:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:33,425 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 [2021-05-21 20:23:33,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:33,430 INFO L225 Difference]: With dead ends: 3178 [2021-05-21 20:23:33,430 INFO L226 Difference]: Without dead ends: 2882 [2021-05-21 20:23:33,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2021-05-21 20:23:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1390. [2021-05-21 20:23:33,466 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) [2021-05-21 20:23:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5492 transitions. [2021-05-21 20:23:33,469 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5492 transitions. Word has length 25 [2021-05-21 20:23:33,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:33,469 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5492 transitions. [2021-05-21 20:23:33,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:33,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5492 transitions. [2021-05-21 20:23:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:33,471 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:33,471 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:33,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-05-21 20:23:33,471 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]=== [2021-05-21 20:23:33,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:33,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1678784955, now seen corresponding path program 349 times [2021-05-21 20:23:33,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:33,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338471243] [2021-05-21 20:23:33,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:33,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:33,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338471243] [2021-05-21 20:23:33,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338471243] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:33,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:33,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:33,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398870102] [2021-05-21 20:23:33,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:33,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:33,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:33,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:33,572 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) [2021-05-21 20:23:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:33,632 INFO L93 Difference]: Finished difference Result 3038 states and 11232 transitions. [2021-05-21 20:23:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:33,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:33,637 INFO L225 Difference]: With dead ends: 3038 [2021-05-21 20:23:33,637 INFO L226 Difference]: Without dead ends: 2849 [2021-05-21 20:23:33,637 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 [2021-05-21 20:23:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2021-05-21 20:23:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 1442. [2021-05-21 20:23:33,673 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) [2021-05-21 20:23:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 5688 transitions. [2021-05-21 20:23:33,675 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 5688 transitions. Word has length 25 [2021-05-21 20:23:33,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:33,675 INFO L482 AbstractCegarLoop]: Abstraction has 1442 states and 5688 transitions. [2021-05-21 20:23:33,675 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) [2021-05-21 20:23:33,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 5688 transitions. [2021-05-21 20:23:33,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:33,677 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:33,677 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] [2021-05-21 20:23:33,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-05-21 20:23:33,677 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]=== [2021-05-21 20:23:33,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:33,677 INFO L82 PathProgramCache]: Analyzing trace with hash -772523461, now seen corresponding path program 350 times [2021-05-21 20:23:33,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:33,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264619577] [2021-05-21 20:23:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:33,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:33,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264619577] [2021-05-21 20:23:33,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264619577] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:33,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:33,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:33,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311418787] [2021-05-21 20:23:33,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:33,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:33,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:33,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:33,774 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) [2021-05-21 20:23:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:33,836 INFO L93 Difference]: Finished difference Result 3024 states and 11163 transitions. [2021-05-21 20:23:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:33,837 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 [2021-05-21 20:23:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:33,842 INFO L225 Difference]: With dead ends: 3024 [2021-05-21 20:23:33,842 INFO L226 Difference]: Without dead ends: 2825 [2021-05-21 20:23:33,842 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 [2021-05-21 20:23:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2021-05-21 20:23:33,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 1418. [2021-05-21 20:23:33,877 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) [2021-05-21 20:23:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5600 transitions. [2021-05-21 20:23:33,879 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5600 transitions. Word has length 25 [2021-05-21 20:23:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:33,879 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 5600 transitions. [2021-05-21 20:23:33,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5600 transitions. [2021-05-21 20:23:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:33,881 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:33,881 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] [2021-05-21 20:23:33,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-05-21 20:23:33,881 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]=== [2021-05-21 20:23:33,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:33,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1061261597, now seen corresponding path program 351 times [2021-05-21 20:23:33,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:33,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331989217] [2021-05-21 20:23:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:33,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:33,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331989217] [2021-05-21 20:23:33,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331989217] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:33,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:33,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:33,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496284787] [2021-05-21 20:23:33,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:33,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:33,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:33,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:33,965 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) [2021-05-21 20:23:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:34,024 INFO L93 Difference]: Finished difference Result 3061 states and 11279 transitions. [2021-05-21 20:23:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:34,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:34,029 INFO L225 Difference]: With dead ends: 3061 [2021-05-21 20:23:34,029 INFO L226 Difference]: Without dead ends: 2872 [2021-05-21 20:23:34,029 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 [2021-05-21 20:23:34,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2021-05-21 20:23:34,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1481. [2021-05-21 20:23:34,085 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) [2021-05-21 20:23:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5807 transitions. [2021-05-21 20:23:34,088 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5807 transitions. Word has length 25 [2021-05-21 20:23:34,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:34,088 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 5807 transitions. [2021-05-21 20:23:34,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:34,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5807 transitions. [2021-05-21 20:23:34,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:34,090 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:34,090 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:34,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-05-21 20:23:34,090 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]=== [2021-05-21 20:23:34,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:34,090 INFO L82 PathProgramCache]: Analyzing trace with hash -662332869, now seen corresponding path program 352 times [2021-05-21 20:23:34,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:34,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422278721] [2021-05-21 20:23:34,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:34,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:34,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422278721] [2021-05-21 20:23:34,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422278721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:34,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:34,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:34,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929788402] [2021-05-21 20:23:34,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:34,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:34,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:34,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:34,174 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) [2021-05-21 20:23:34,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:34,221 INFO L93 Difference]: Finished difference Result 3094 states and 11362 transitions. [2021-05-21 20:23:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:34,221 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 [2021-05-21 20:23:34,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:34,226 INFO L225 Difference]: With dead ends: 3094 [2021-05-21 20:23:34,227 INFO L226 Difference]: Without dead ends: 2809 [2021-05-21 20:23:34,227 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 [2021-05-21 20:23:34,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2021-05-21 20:23:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 1418. [2021-05-21 20:23:34,261 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) [2021-05-21 20:23:34,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5572 transitions. [2021-05-21 20:23:34,264 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5572 transitions. Word has length 25 [2021-05-21 20:23:34,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:34,264 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 5572 transitions. [2021-05-21 20:23:34,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:34,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5572 transitions. [2021-05-21 20:23:34,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:34,265 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:34,266 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] [2021-05-21 20:23:34,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-05-21 20:23:34,266 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]=== [2021-05-21 20:23:34,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:34,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1616065861, now seen corresponding path program 353 times [2021-05-21 20:23:34,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:34,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043122031] [2021-05-21 20:23:34,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:34,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:34,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043122031] [2021-05-21 20:23:34,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043122031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:34,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:34,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:34,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779652075] [2021-05-21 20:23:34,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:34,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:34,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:34,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:34,355 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) [2021-05-21 20:23:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:34,414 INFO L93 Difference]: Finished difference Result 3010 states and 11087 transitions. [2021-05-21 20:23:34,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:34,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:34,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:34,419 INFO L225 Difference]: With dead ends: 3010 [2021-05-21 20:23:34,419 INFO L226 Difference]: Without dead ends: 2835 [2021-05-21 20:23:34,419 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-05-21 20:23:34,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 1458. [2021-05-21 20:23:34,454 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) [2021-05-21 20:23:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5712 transitions. [2021-05-21 20:23:34,457 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5712 transitions. Word has length 25 [2021-05-21 20:23:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:34,457 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5712 transitions. [2021-05-21 20:23:34,457 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) [2021-05-21 20:23:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5712 transitions. [2021-05-21 20:23:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:34,459 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:34,459 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:34,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-05-21 20:23:34,459 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]=== [2021-05-21 20:23:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:34,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1397714275, now seen corresponding path program 354 times [2021-05-21 20:23:34,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:34,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300088731] [2021-05-21 20:23:34,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:34,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:34,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300088731] [2021-05-21 20:23:34,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300088731] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:34,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:34,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:34,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633657133] [2021-05-21 20:23:34,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:34,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:34,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:34,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:34,553 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) [2021-05-21 20:23:34,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:34,600 INFO L93 Difference]: Finished difference Result 2962 states and 10887 transitions. [2021-05-21 20:23:34,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:34,601 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 [2021-05-21 20:23:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:34,605 INFO L225 Difference]: With dead ends: 2962 [2021-05-21 20:23:34,606 INFO L226 Difference]: Without dead ends: 2672 [2021-05-21 20:23:34,606 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 [2021-05-21 20:23:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-05-21 20:23:34,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1390. [2021-05-21 20:23:34,639 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) [2021-05-21 20:23:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5478 transitions. [2021-05-21 20:23:34,642 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5478 transitions. Word has length 25 [2021-05-21 20:23:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:34,642 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5478 transitions. [2021-05-21 20:23:34,642 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) [2021-05-21 20:23:34,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5478 transitions. [2021-05-21 20:23:34,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:34,644 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:34,644 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] [2021-05-21 20:23:34,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-05-21 20:23:34,644 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]=== [2021-05-21 20:23:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:34,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2023140121, now seen corresponding path program 355 times [2021-05-21 20:23:34,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:34,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932855447] [2021-05-21 20:23:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:34,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:34,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932855447] [2021-05-21 20:23:34,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932855447] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:34,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:34,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:34,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046728946] [2021-05-21 20:23:34,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:34,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:34,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:34,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:34,724 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) [2021-05-21 20:23:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:34,783 INFO L93 Difference]: Finished difference Result 2993 states and 11081 transitions. [2021-05-21 20:23:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:34,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:34,788 INFO L225 Difference]: With dead ends: 2993 [2021-05-21 20:23:34,788 INFO L226 Difference]: Without dead ends: 2810 [2021-05-21 20:23:34,789 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 [2021-05-21 20:23:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-05-21 20:23:34,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1434. [2021-05-21 20:23:34,823 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) [2021-05-21 20:23:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 5646 transitions. [2021-05-21 20:23:34,826 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 5646 transitions. Word has length 25 [2021-05-21 20:23:34,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:34,826 INFO L482 AbstractCegarLoop]: Abstraction has 1434 states and 5646 transitions. [2021-05-21 20:23:34,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:34,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 5646 transitions. [2021-05-21 20:23:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:34,828 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:34,828 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:34,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-05-21 20:23:34,828 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]=== [2021-05-21 20:23:34,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:34,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1190764549, now seen corresponding path program 356 times [2021-05-21 20:23:34,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:34,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457697036] [2021-05-21 20:23:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:34,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:34,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457697036] [2021-05-21 20:23:34,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457697036] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:34,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:34,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:34,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512261136] [2021-05-21 20:23:34,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:34,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:34,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:34,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:34,908 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) [2021-05-21 20:23:34,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:34,975 INFO L93 Difference]: Finished difference Result 2985 states and 11029 transitions. [2021-05-21 20:23:34,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:34,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:34,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:34,980 INFO L225 Difference]: With dead ends: 2985 [2021-05-21 20:23:34,980 INFO L226 Difference]: Without dead ends: 2786 [2021-05-21 20:23:34,980 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 [2021-05-21 20:23:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-05-21 20:23:35,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1410. [2021-05-21 20:23:35,015 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) [2021-05-21 20:23:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 5558 transitions. [2021-05-21 20:23:35,018 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 5558 transitions. Word has length 25 [2021-05-21 20:23:35,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:35,018 INFO L482 AbstractCegarLoop]: Abstraction has 1410 states and 5558 transitions. [2021-05-21 20:23:35,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 5558 transitions. [2021-05-21 20:23:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:35,020 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:35,020 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] [2021-05-21 20:23:35,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-05-21 20:23:35,020 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]=== [2021-05-21 20:23:35,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:35,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1405616763, now seen corresponding path program 357 times [2021-05-21 20:23:35,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:35,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121603296] [2021-05-21 20:23:35,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:35,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:35,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121603296] [2021-05-21 20:23:35,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121603296] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:35,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:35,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:35,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047188564] [2021-05-21 20:23:35,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:35,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:35,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:35,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:35,110 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) [2021-05-21 20:23:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:35,177 INFO L93 Difference]: Finished difference Result 2921 states and 10793 transitions. [2021-05-21 20:23:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:35,177 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 [2021-05-21 20:23:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:35,182 INFO L225 Difference]: With dead ends: 2921 [2021-05-21 20:23:35,182 INFO L226 Difference]: Without dead ends: 2738 [2021-05-21 20:23:35,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:35,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-05-21 20:23:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 1454. [2021-05-21 20:23:35,217 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) [2021-05-21 20:23:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5710 transitions. [2021-05-21 20:23:35,219 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5710 transitions. Word has length 25 [2021-05-21 20:23:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:35,219 INFO L482 AbstractCegarLoop]: Abstraction has 1454 states and 5710 transitions. [2021-05-21 20:23:35,219 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) [2021-05-21 20:23:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5710 transitions. [2021-05-21 20:23:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:35,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:35,221 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] [2021-05-21 20:23:35,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-05-21 20:23:35,221 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]=== [2021-05-21 20:23:35,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:35,222 INFO L82 PathProgramCache]: Analyzing trace with hash -2119579013, now seen corresponding path program 358 times [2021-05-21 20:23:35,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:35,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573332482] [2021-05-21 20:23:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:35,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:35,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573332482] [2021-05-21 20:23:35,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573332482] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:35,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:35,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:35,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49842294] [2021-05-21 20:23:35,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:35,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:35,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:35,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:35,312 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) [2021-05-21 20:23:35,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:35,376 INFO L93 Difference]: Finished difference Result 2960 states and 10896 transitions. [2021-05-21 20:23:35,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:35,376 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:35,381 INFO L225 Difference]: With dead ends: 2960 [2021-05-21 20:23:35,381 INFO L226 Difference]: Without dead ends: 2694 [2021-05-21 20:23:35,381 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 [2021-05-21 20:23:35,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-05-21 20:23:35,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1410. [2021-05-21 20:23:35,415 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) [2021-05-21 20:23:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 5538 transitions. [2021-05-21 20:23:35,418 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 5538 transitions. Word has length 25 [2021-05-21 20:23:35,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:35,418 INFO L482 AbstractCegarLoop]: Abstraction has 1410 states and 5538 transitions. [2021-05-21 20:23:35,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:35,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 5538 transitions. [2021-05-21 20:23:35,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:35,419 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:35,420 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] [2021-05-21 20:23:35,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-05-21 20:23:35,420 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]=== [2021-05-21 20:23:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:35,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1793621725, now seen corresponding path program 359 times [2021-05-21 20:23:35,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:35,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641955364] [2021-05-21 20:23:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:35,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:35,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641955364] [2021-05-21 20:23:35,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641955364] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:35,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:35,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:35,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852548743] [2021-05-21 20:23:35,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:35,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:35,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:35,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:35,509 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) [2021-05-21 20:23:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:35,569 INFO L93 Difference]: Finished difference Result 2861 states and 10537 transitions. [2021-05-21 20:23:35,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:35,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:35,574 INFO L225 Difference]: With dead ends: 2861 [2021-05-21 20:23:35,574 INFO L226 Difference]: Without dead ends: 2686 [2021-05-21 20:23:35,574 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 [2021-05-21 20:23:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-05-21 20:23:35,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1450. [2021-05-21 20:23:35,609 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) [2021-05-21 20:23:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5678 transitions. [2021-05-21 20:23:35,611 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5678 transitions. Word has length 25 [2021-05-21 20:23:35,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:35,611 INFO L482 AbstractCegarLoop]: Abstraction has 1450 states and 5678 transitions. [2021-05-21 20:23:35,611 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) [2021-05-21 20:23:35,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5678 transitions. [2021-05-21 20:23:35,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:35,613 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:35,613 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:35,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-05-21 20:23:35,613 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]=== [2021-05-21 20:23:35,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:35,613 INFO L82 PathProgramCache]: Analyzing trace with hash -27413701, now seen corresponding path program 360 times [2021-05-21 20:23:35,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:35,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272759115] [2021-05-21 20:23:35,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:35,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:35,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272759115] [2021-05-21 20:23:35,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272759115] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:35,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:35,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:35,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314319742] [2021-05-21 20:23:35,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:35,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:35,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:35,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:35,704 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) [2021-05-21 20:23:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:35,753 INFO L93 Difference]: Finished difference Result 2813 states and 10337 transitions. [2021-05-21 20:23:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:35,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:35,758 INFO L225 Difference]: With dead ends: 2813 [2021-05-21 20:23:35,758 INFO L226 Difference]: Without dead ends: 2511 [2021-05-21 20:23:35,758 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 [2021-05-21 20:23:35,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2021-05-21 20:23:35,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 1370. [2021-05-21 20:23:35,790 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) [2021-05-21 20:23:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5429 transitions. [2021-05-21 20:23:35,793 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5429 transitions. Word has length 25 [2021-05-21 20:23:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:35,793 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5429 transitions. [2021-05-21 20:23:35,793 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) [2021-05-21 20:23:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5429 transitions. [2021-05-21 20:23:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:35,795 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:35,795 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:35,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-05-21 20:23:35,795 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]=== [2021-05-21 20:23:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:35,795 INFO L82 PathProgramCache]: Analyzing trace with hash 953609979, now seen corresponding path program 361 times [2021-05-21 20:23:35,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:35,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674004685] [2021-05-21 20:23:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:35,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:35,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674004685] [2021-05-21 20:23:35,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674004685] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:35,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:35,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:35,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765558993] [2021-05-21 20:23:35,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:35,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:35,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:35,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:35,884 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) [2021-05-21 20:23:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:35,933 INFO L93 Difference]: Finished difference Result 2920 states and 10769 transitions. [2021-05-21 20:23:35,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:35,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:35,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:35,938 INFO L225 Difference]: With dead ends: 2920 [2021-05-21 20:23:35,939 INFO L226 Difference]: Without dead ends: 2761 [2021-05-21 20:23:35,939 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 [2021-05-21 20:23:35,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-05-21 20:23:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1418. [2021-05-21 20:23:35,983 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) [2021-05-21 20:23:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5613 transitions. [2021-05-21 20:23:35,986 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5613 transitions. Word has length 25 [2021-05-21 20:23:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:35,986 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 5613 transitions. [2021-05-21 20:23:35,986 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) [2021-05-21 20:23:35,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5613 transitions. [2021-05-21 20:23:35,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:35,987 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:35,987 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:35,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-05-21 20:23:35,988 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]=== [2021-05-21 20:23:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:35,988 INFO L82 PathProgramCache]: Analyzing trace with hash -54688005, now seen corresponding path program 362 times [2021-05-21 20:23:35,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:35,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726907061] [2021-05-21 20:23:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:36,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:36,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726907061] [2021-05-21 20:23:36,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726907061] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:36,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:36,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:36,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263041976] [2021-05-21 20:23:36,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:36,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:36,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:36,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:36,076 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) [2021-05-21 20:23:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:36,126 INFO L93 Difference]: Finished difference Result 2983 states and 10976 transitions. [2021-05-21 20:23:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:36,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:36,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:36,131 INFO L225 Difference]: With dead ends: 2983 [2021-05-21 20:23:36,131 INFO L226 Difference]: Without dead ends: 2729 [2021-05-21 20:23:36,131 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 [2021-05-21 20:23:36,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-05-21 20:23:36,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1386. [2021-05-21 20:23:36,166 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) [2021-05-21 20:23:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5485 transitions. [2021-05-21 20:23:36,168 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5485 transitions. Word has length 25 [2021-05-21 20:23:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:36,168 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 5485 transitions. [2021-05-21 20:23:36,168 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) [2021-05-21 20:23:36,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5485 transitions. [2021-05-21 20:23:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:36,170 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:36,170 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] [2021-05-21 20:23:36,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-05-21 20:23:36,170 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]=== [2021-05-21 20:23:36,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:36,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1942643485, now seen corresponding path program 363 times [2021-05-21 20:23:36,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:36,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517137616] [2021-05-21 20:23:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:36,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:36,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517137616] [2021-05-21 20:23:36,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517137616] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:36,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:36,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:36,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923324277] [2021-05-21 20:23:36,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:36,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:36,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:36,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:36,266 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) [2021-05-21 20:23:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:36,316 INFO L93 Difference]: Finished difference Result 2869 states and 10570 transitions. [2021-05-21 20:23:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:36,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:36,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:36,321 INFO L225 Difference]: With dead ends: 2869 [2021-05-21 20:23:36,321 INFO L226 Difference]: Without dead ends: 2710 [2021-05-21 20:23:36,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:36,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2021-05-21 20:23:36,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 1402. [2021-05-21 20:23:36,355 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) [2021-05-21 20:23:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5533 transitions. [2021-05-21 20:23:36,358 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5533 transitions. Word has length 25 [2021-05-21 20:23:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:36,358 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 5533 transitions. [2021-05-21 20:23:36,358 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) [2021-05-21 20:23:36,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5533 transitions. [2021-05-21 20:23:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:36,360 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:36,360 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:36,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-05-21 20:23:36,360 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]=== [2021-05-21 20:23:36,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:36,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1344025827, now seen corresponding path program 364 times [2021-05-21 20:23:36,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:36,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194882826] [2021-05-21 20:23:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:36,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:36,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194882826] [2021-05-21 20:23:36,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194882826] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:36,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:36,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:36,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024627305] [2021-05-21 20:23:36,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:36,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:36,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:36,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:36,457 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) [2021-05-21 20:23:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:36,524 INFO L93 Difference]: Finished difference Result 2897 states and 10658 transitions. [2021-05-21 20:23:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:36,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:36,529 INFO L225 Difference]: With dead ends: 2897 [2021-05-21 20:23:36,529 INFO L226 Difference]: Without dead ends: 2694 [2021-05-21 20:23:36,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:36,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-05-21 20:23:36,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1386. [2021-05-21 20:23:36,566 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) [2021-05-21 20:23:36,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5477 transitions. [2021-05-21 20:23:36,568 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5477 transitions. Word has length 25 [2021-05-21 20:23:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:36,569 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 5477 transitions. [2021-05-21 20:23:36,569 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) [2021-05-21 20:23:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5477 transitions. [2021-05-21 20:23:36,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:36,570 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:36,570 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] [2021-05-21 20:23:36,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-05-21 20:23:36,571 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]=== [2021-05-21 20:23:36,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:36,571 INFO L82 PathProgramCache]: Analyzing trace with hash 344220445, now seen corresponding path program 365 times [2021-05-21 20:23:36,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:36,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753947839] [2021-05-21 20:23:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:36,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:36,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753947839] [2021-05-21 20:23:36,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753947839] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:36,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:36,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:36,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966751084] [2021-05-21 20:23:36,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:36,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:36,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:36,654 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) [2021-05-21 20:23:36,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:36,724 INFO L93 Difference]: Finished difference Result 2990 states and 11012 transitions. [2021-05-21 20:23:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:36,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:36,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:36,730 INFO L225 Difference]: With dead ends: 2990 [2021-05-21 20:23:36,730 INFO L226 Difference]: Without dead ends: 2803 [2021-05-21 20:23:36,730 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 [2021-05-21 20:23:36,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2021-05-21 20:23:36,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 1432. [2021-05-21 20:23:36,768 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) [2021-05-21 20:23:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5634 transitions. [2021-05-21 20:23:36,771 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5634 transitions. Word has length 25 [2021-05-21 20:23:36,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:36,771 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5634 transitions. [2021-05-21 20:23:36,771 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) [2021-05-21 20:23:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5634 transitions. [2021-05-21 20:23:36,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:36,773 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:36,773 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] [2021-05-21 20:23:36,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-05-21 20:23:36,773 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]=== [2021-05-21 20:23:36,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:36,773 INFO L82 PathProgramCache]: Analyzing trace with hash -8919045, now seen corresponding path program 366 times [2021-05-21 20:23:36,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:36,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610944988] [2021-05-21 20:23:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:36,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:36,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610944988] [2021-05-21 20:23:36,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610944988] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:36,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:36,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:36,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174108705] [2021-05-21 20:23:36,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:36,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:36,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:36,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:36,867 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) [2021-05-21 20:23:36,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:36,919 INFO L93 Difference]: Finished difference Result 3025 states and 11101 transitions. [2021-05-21 20:23:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:36,919 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 [2021-05-21 20:23:36,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:36,924 INFO L225 Difference]: With dead ends: 3025 [2021-05-21 20:23:36,924 INFO L226 Difference]: Without dead ends: 2741 [2021-05-21 20:23:36,925 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 [2021-05-21 20:23:36,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2021-05-21 20:23:36,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 1370. [2021-05-21 20:23:36,959 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) [2021-05-21 20:23:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5421 transitions. [2021-05-21 20:23:36,961 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5421 transitions. Word has length 25 [2021-05-21 20:23:36,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:36,961 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5421 transitions. [2021-05-21 20:23:36,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:36,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5421 transitions. [2021-05-21 20:23:36,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:36,963 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:36,963 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:36,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-05-21 20:23:36,963 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]=== [2021-05-21 20:23:36,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:36,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1631755555, now seen corresponding path program 367 times [2021-05-21 20:23:36,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:36,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759305358] [2021-05-21 20:23:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:37,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:37,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759305358] [2021-05-21 20:23:37,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759305358] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:37,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:37,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:37,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898930265] [2021-05-21 20:23:37,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:37,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:37,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:37,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:37,061 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) [2021-05-21 20:23:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:37,110 INFO L93 Difference]: Finished difference Result 2914 states and 10742 transitions. [2021-05-21 20:23:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:37,110 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 [2021-05-21 20:23:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:37,115 INFO L225 Difference]: With dead ends: 2914 [2021-05-21 20:23:37,115 INFO L226 Difference]: Without dead ends: 2755 [2021-05-21 20:23:37,116 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 [2021-05-21 20:23:37,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2021-05-21 20:23:37,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 1418. [2021-05-21 20:23:37,150 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) [2021-05-21 20:23:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5605 transitions. [2021-05-21 20:23:37,153 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5605 transitions. Word has length 25 [2021-05-21 20:23:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:37,153 INFO L482 AbstractCegarLoop]: Abstraction has 1418 states and 5605 transitions. [2021-05-21 20:23:37,153 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) [2021-05-21 20:23:37,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5605 transitions. [2021-05-21 20:23:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:37,155 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:37,155 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] [2021-05-21 20:23:37,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-05-21 20:23:37,156 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]=== [2021-05-21 20:23:37,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:37,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1654913757, now seen corresponding path program 368 times [2021-05-21 20:23:37,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:37,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420946080] [2021-05-21 20:23:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:37,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:37,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420946080] [2021-05-21 20:23:37,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420946080] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:37,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:37,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:37,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111777556] [2021-05-21 20:23:37,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:37,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:37,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:37,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:37,250 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) [2021-05-21 20:23:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:37,299 INFO L93 Difference]: Finished difference Result 2977 states and 10949 transitions. [2021-05-21 20:23:37,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:37,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:37,305 INFO L225 Difference]: With dead ends: 2977 [2021-05-21 20:23:37,305 INFO L226 Difference]: Without dead ends: 2723 [2021-05-21 20:23:37,305 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 [2021-05-21 20:23:37,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-05-21 20:23:37,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1386. [2021-05-21 20:23:37,341 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) [2021-05-21 20:23:37,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5477 transitions. [2021-05-21 20:23:37,343 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5477 transitions. Word has length 25 [2021-05-21 20:23:37,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:37,343 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 5477 transitions. [2021-05-21 20:23:37,343 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) [2021-05-21 20:23:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5477 transitions. [2021-05-21 20:23:37,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:37,345 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:37,345 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] [2021-05-21 20:23:37,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-05-21 20:23:37,345 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]=== [2021-05-21 20:23:37,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:37,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1626002787, now seen corresponding path program 369 times [2021-05-21 20:23:37,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:37,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085849812] [2021-05-21 20:23:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:37,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:37,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085849812] [2021-05-21 20:23:37,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085849812] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:37,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:37,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:37,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784991988] [2021-05-21 20:23:37,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:37,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:37,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:37,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:37,445 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) [2021-05-21 20:23:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:37,508 INFO L93 Difference]: Finished difference Result 2859 states and 10531 transitions. [2021-05-21 20:23:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:37,508 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 [2021-05-21 20:23:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:37,514 INFO L225 Difference]: With dead ends: 2859 [2021-05-21 20:23:37,515 INFO L226 Difference]: Without dead ends: 2700 [2021-05-21 20:23:37,515 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 [2021-05-21 20:23:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2021-05-21 20:23:37,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1402. [2021-05-21 20:23:37,563 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) [2021-05-21 20:23:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5525 transitions. [2021-05-21 20:23:37,566 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5525 transitions. Word has length 25 [2021-05-21 20:23:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:37,566 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 5525 transitions. [2021-05-21 20:23:37,566 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) [2021-05-21 20:23:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5525 transitions. [2021-05-21 20:23:37,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:37,569 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:37,569 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:37,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-05-21 20:23:37,569 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]=== [2021-05-21 20:23:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:37,569 INFO L82 PathProgramCache]: Analyzing trace with hash 54493853, now seen corresponding path program 370 times [2021-05-21 20:23:37,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:37,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736696292] [2021-05-21 20:23:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:37,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:37,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736696292] [2021-05-21 20:23:37,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736696292] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:37,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:37,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:37,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906549328] [2021-05-21 20:23:37,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:37,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:37,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:37,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:37,656 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) [2021-05-21 20:23:37,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:37,726 INFO L93 Difference]: Finished difference Result 2883 states and 10607 transitions. [2021-05-21 20:23:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:37,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:37,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:37,731 INFO L225 Difference]: With dead ends: 2883 [2021-05-21 20:23:37,731 INFO L226 Difference]: Without dead ends: 2684 [2021-05-21 20:23:37,731 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 [2021-05-21 20:23:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-05-21 20:23:37,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1386. [2021-05-21 20:23:37,765 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) [2021-05-21 20:23:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5469 transitions. [2021-05-21 20:23:37,767 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5469 transitions. Word has length 25 [2021-05-21 20:23:37,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:37,767 INFO L482 AbstractCegarLoop]: Abstraction has 1386 states and 5469 transitions. [2021-05-21 20:23:37,767 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) [2021-05-21 20:23:37,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5469 transitions. [2021-05-21 20:23:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:37,769 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:37,769 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] [2021-05-21 20:23:37,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-05-21 20:23:37,769 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]=== [2021-05-21 20:23:37,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1742740125, now seen corresponding path program 371 times [2021-05-21 20:23:37,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:37,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677170523] [2021-05-21 20:23:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:37,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:37,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677170523] [2021-05-21 20:23:37,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677170523] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:37,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:37,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:37,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622562392] [2021-05-21 20:23:37,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:37,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:37,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:37,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:37,863 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) [2021-05-21 20:23:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:37,926 INFO L93 Difference]: Finished difference Result 2974 states and 10954 transitions. [2021-05-21 20:23:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:37,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:37,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:37,932 INFO L225 Difference]: With dead ends: 2974 [2021-05-21 20:23:37,932 INFO L226 Difference]: Without dead ends: 2791 [2021-05-21 20:23:37,954 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 [2021-05-21 20:23:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-05-21 20:23:37,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 1430. [2021-05-21 20:23:37,988 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) [2021-05-21 20:23:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 5621 transitions. [2021-05-21 20:23:37,990 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 5621 transitions. Word has length 25 [2021-05-21 20:23:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:37,991 INFO L482 AbstractCegarLoop]: Abstraction has 1430 states and 5621 transitions. [2021-05-21 20:23:37,991 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) [2021-05-21 20:23:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 5621 transitions. [2021-05-21 20:23:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:37,992 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:37,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:37,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-05-21 20:23:37,993 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]=== [2021-05-21 20:23:37,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:37,993 INFO L82 PathProgramCache]: Analyzing trace with hash 738408187, now seen corresponding path program 372 times [2021-05-21 20:23:37,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:37,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606895298] [2021-05-21 20:23:37,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:38,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:38,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606895298] [2021-05-21 20:23:38,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606895298] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:38,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:38,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:38,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854259662] [2021-05-21 20:23:38,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:38,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:38,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:38,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:38,087 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) [2021-05-21 20:23:38,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:38,137 INFO L93 Difference]: Finished difference Result 3013 states and 11057 transitions. [2021-05-21 20:23:38,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:38,137 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 [2021-05-21 20:23:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:38,142 INFO L225 Difference]: With dead ends: 3013 [2021-05-21 20:23:38,142 INFO L226 Difference]: Without dead ends: 2731 [2021-05-21 20:23:38,142 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 [2021-05-21 20:23:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2021-05-21 20:23:38,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 1370. [2021-05-21 20:23:38,177 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) [2021-05-21 20:23:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5413 transitions. [2021-05-21 20:23:38,179 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5413 transitions. Word has length 25 [2021-05-21 20:23:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:38,179 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5413 transitions. [2021-05-21 20:23:38,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5413 transitions. [2021-05-21 20:23:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:38,181 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:38,181 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] [2021-05-21 20:23:38,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-05-21 20:23:38,181 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]=== [2021-05-21 20:23:38,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:38,181 INFO L82 PathProgramCache]: Analyzing trace with hash -2090389953, now seen corresponding path program 373 times [2021-05-21 20:23:38,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:38,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182140691] [2021-05-21 20:23:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:38,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:38,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182140691] [2021-05-21 20:23:38,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182140691] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:38,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:38,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:38,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059834298] [2021-05-21 20:23:38,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:38,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:38,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:38,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:38,270 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) [2021-05-21 20:23:38,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:38,320 INFO L93 Difference]: Finished difference Result 2788 states and 10268 transitions. [2021-05-21 20:23:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:38,320 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 [2021-05-21 20:23:38,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:38,325 INFO L225 Difference]: With dead ends: 2788 [2021-05-21 20:23:38,325 INFO L226 Difference]: Without dead ends: 2629 [2021-05-21 20:23:38,325 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 [2021-05-21 20:23:38,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2021-05-21 20:23:38,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 1394. [2021-05-21 20:23:38,358 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) [2021-05-21 20:23:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5497 transitions. [2021-05-21 20:23:38,361 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5497 transitions. Word has length 25 [2021-05-21 20:23:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:38,361 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 5497 transitions. [2021-05-21 20:23:38,361 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) [2021-05-21 20:23:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5497 transitions. [2021-05-21 20:23:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:38,363 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:38,363 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:38,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-05-21 20:23:38,363 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]=== [2021-05-21 20:23:38,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:38,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1082091969, now seen corresponding path program 374 times [2021-05-21 20:23:38,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:38,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748225242] [2021-05-21 20:23:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:38,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:38,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748225242] [2021-05-21 20:23:38,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748225242] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:38,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:38,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:38,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586211103] [2021-05-21 20:23:38,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:38,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:38,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:38,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:38,448 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) [2021-05-21 20:23:38,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:38,511 INFO L93 Difference]: Finished difference Result 2816 states and 10356 transitions. [2021-05-21 20:23:38,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:38,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:38,516 INFO L225 Difference]: With dead ends: 2816 [2021-05-21 20:23:38,516 INFO L226 Difference]: Without dead ends: 2613 [2021-05-21 20:23:38,516 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 [2021-05-21 20:23:38,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2021-05-21 20:23:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 1378. [2021-05-21 20:23:38,549 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) [2021-05-21 20:23:38,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5441 transitions. [2021-05-21 20:23:38,552 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5441 transitions. Word has length 25 [2021-05-21 20:23:38,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:38,552 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 5441 transitions. [2021-05-21 20:23:38,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:38,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5441 transitions. [2021-05-21 20:23:38,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:38,553 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:38,553 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:38,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-05-21 20:23:38,554 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]=== [2021-05-21 20:23:38,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:38,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1357780381, now seen corresponding path program 375 times [2021-05-21 20:23:38,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:38,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111261807] [2021-05-21 20:23:38,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:38,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:38,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111261807] [2021-05-21 20:23:38,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111261807] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:38,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:38,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:38,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111114228] [2021-05-21 20:23:38,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:38,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:38,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:38,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:38,629 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) [2021-05-21 20:23:38,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:38,678 INFO L93 Difference]: Finished difference Result 2784 states and 10248 transitions. [2021-05-21 20:23:38,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:38,678 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 [2021-05-21 20:23:38,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:38,683 INFO L225 Difference]: With dead ends: 2784 [2021-05-21 20:23:38,683 INFO L226 Difference]: Without dead ends: 2625 [2021-05-21 20:23:38,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:38,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2021-05-21 20:23:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 1394. [2021-05-21 20:23:38,716 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) [2021-05-21 20:23:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5489 transitions. [2021-05-21 20:23:38,719 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5489 transitions. Word has length 25 [2021-05-21 20:23:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:38,719 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 5489 transitions. [2021-05-21 20:23:38,719 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) [2021-05-21 20:23:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5489 transitions. [2021-05-21 20:23:38,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:38,721 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:38,721 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] [2021-05-21 20:23:38,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-05-21 20:23:38,721 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]=== [2021-05-21 20:23:38,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:38,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1327920703, now seen corresponding path program 376 times [2021-05-21 20:23:38,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:38,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553592841] [2021-05-21 20:23:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:38,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:38,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553592841] [2021-05-21 20:23:38,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553592841] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:38,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:38,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:38,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670178812] [2021-05-21 20:23:38,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:38,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:38,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:38,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:38,796 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) [2021-05-21 20:23:38,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:38,860 INFO L93 Difference]: Finished difference Result 2808 states and 10324 transitions. [2021-05-21 20:23:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:38,861 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 [2021-05-21 20:23:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:38,865 INFO L225 Difference]: With dead ends: 2808 [2021-05-21 20:23:38,865 INFO L226 Difference]: Without dead ends: 2609 [2021-05-21 20:23:38,865 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 [2021-05-21 20:23:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2609 states. [2021-05-21 20:23:38,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2609 to 1378. [2021-05-21 20:23:38,899 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) [2021-05-21 20:23:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5433 transitions. [2021-05-21 20:23:38,902 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5433 transitions. Word has length 25 [2021-05-21 20:23:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:38,902 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 5433 transitions. [2021-05-21 20:23:38,902 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) [2021-05-21 20:23:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5433 transitions. [2021-05-21 20:23:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:38,903 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:38,903 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] [2021-05-21 20:23:38,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-05-21 20:23:38,904 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]=== [2021-05-21 20:23:38,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:38,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1032524225, now seen corresponding path program 377 times [2021-05-21 20:23:38,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:38,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270408931] [2021-05-21 20:23:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:38,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:38,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270408931] [2021-05-21 20:23:38,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270408931] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:38,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:38,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:38,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036237682] [2021-05-21 20:23:38,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:38,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:38,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:38,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:38,980 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) [2021-05-21 20:23:39,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:39,041 INFO L93 Difference]: Finished difference Result 2852 states and 10500 transitions. [2021-05-21 20:23:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:39,041 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 [2021-05-21 20:23:39,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:39,046 INFO L225 Difference]: With dead ends: 2852 [2021-05-21 20:23:39,046 INFO L226 Difference]: Without dead ends: 2665 [2021-05-21 20:23:39,046 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 [2021-05-21 20:23:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-05-21 20:23:39,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1406. [2021-05-21 20:23:39,081 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) [2021-05-21 20:23:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 5521 transitions. [2021-05-21 20:23:39,083 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 5521 transitions. Word has length 25 [2021-05-21 20:23:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:39,084 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 5521 transitions. [2021-05-21 20:23:39,084 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) [2021-05-21 20:23:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 5521 transitions. [2021-05-21 20:23:39,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:39,085 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:39,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:39,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-05-21 20:23:39,086 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]=== [2021-05-21 20:23:39,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:39,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1219106077, now seen corresponding path program 378 times [2021-05-21 20:23:39,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:39,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973638003] [2021-05-21 20:23:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:39,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:39,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973638003] [2021-05-21 20:23:39,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973638003] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:39,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:39,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:39,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270534025] [2021-05-21 20:23:39,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:39,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:39,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:39,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:39,163 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) [2021-05-21 20:23:39,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:39,228 INFO L93 Difference]: Finished difference Result 2848 states and 10460 transitions. [2021-05-21 20:23:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:39,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:39,233 INFO L225 Difference]: With dead ends: 2848 [2021-05-21 20:23:39,233 INFO L226 Difference]: Without dead ends: 2629 [2021-05-21 20:23:39,233 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 [2021-05-21 20:23:39,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2021-05-21 20:23:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 1370. [2021-05-21 20:23:39,266 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) [2021-05-21 20:23:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5409 transitions. [2021-05-21 20:23:39,269 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5409 transitions. Word has length 25 [2021-05-21 20:23:39,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:39,269 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5409 transitions. [2021-05-21 20:23:39,269 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) [2021-05-21 20:23:39,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5409 transitions. [2021-05-21 20:23:39,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:39,272 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:39,272 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] [2021-05-21 20:23:39,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-05-21 20:23:39,272 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]=== [2021-05-21 20:23:39,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:39,272 INFO L82 PathProgramCache]: Analyzing trace with hash -2125494721, now seen corresponding path program 379 times [2021-05-21 20:23:39,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:39,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265291856] [2021-05-21 20:23:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:39,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:39,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265291856] [2021-05-21 20:23:39,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265291856] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:39,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:39,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:39,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306379414] [2021-05-21 20:23:39,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:39,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:39,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:39,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:39,350 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) [2021-05-21 20:23:39,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:39,417 INFO L93 Difference]: Finished difference Result 2987 states and 11039 transitions. [2021-05-21 20:23:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:39,418 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 [2021-05-21 20:23:39,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:39,423 INFO L225 Difference]: With dead ends: 2987 [2021-05-21 20:23:39,424 INFO L226 Difference]: Without dead ends: 2800 [2021-05-21 20:23:39,424 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 [2021-05-21 20:23:39,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2021-05-21 20:23:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 1420. [2021-05-21 20:23:39,461 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) [2021-05-21 20:23:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5598 transitions. [2021-05-21 20:23:39,463 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5598 transitions. Word has length 25 [2021-05-21 20:23:39,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:39,464 INFO L482 AbstractCegarLoop]: Abstraction has 1420 states and 5598 transitions. [2021-05-21 20:23:39,464 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) [2021-05-21 20:23:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5598 transitions. [2021-05-21 20:23:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:39,466 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:39,466 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] [2021-05-21 20:23:39,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-05-21 20:23:39,466 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]=== [2021-05-21 20:23:39,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:39,466 INFO L82 PathProgramCache]: Analyzing trace with hash 126135581, now seen corresponding path program 380 times [2021-05-21 20:23:39,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:39,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883400597] [2021-05-21 20:23:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:39,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:39,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883400597] [2021-05-21 20:23:39,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883400597] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:39,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:39,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:39,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335013618] [2021-05-21 20:23:39,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:39,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:39,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:39,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:39,542 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) [2021-05-21 20:23:39,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:39,611 INFO L93 Difference]: Finished difference Result 2983 states and 10999 transitions. [2021-05-21 20:23:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:39,611 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 [2021-05-21 20:23:39,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:39,616 INFO L225 Difference]: With dead ends: 2983 [2021-05-21 20:23:39,617 INFO L226 Difference]: Without dead ends: 2772 [2021-05-21 20:23:39,617 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 [2021-05-21 20:23:39,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2021-05-21 20:23:39,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 1392. [2021-05-21 20:23:39,651 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) [2021-05-21 20:23:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5496 transitions. [2021-05-21 20:23:39,654 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5496 transitions. Word has length 25 [2021-05-21 20:23:39,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:39,654 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5496 transitions. [2021-05-21 20:23:39,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:39,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5496 transitions. [2021-05-21 20:23:39,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:39,656 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:39,656 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:39,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-05-21 20:23:39,656 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]=== [2021-05-21 20:23:39,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:39,656 INFO L82 PathProgramCache]: Analyzing trace with hash -920845539, now seen corresponding path program 381 times [2021-05-21 20:23:39,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:39,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207750247] [2021-05-21 20:23:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:39,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:39,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207750247] [2021-05-21 20:23:39,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207750247] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:39,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:39,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:39,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192444349] [2021-05-21 20:23:39,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:39,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:39,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:39,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:39,731 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) [2021-05-21 20:23:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:39,802 INFO L93 Difference]: Finished difference Result 3044 states and 11227 transitions. [2021-05-21 20:23:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:39,802 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 [2021-05-21 20:23:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:39,807 INFO L225 Difference]: With dead ends: 3044 [2021-05-21 20:23:39,807 INFO L226 Difference]: Without dead ends: 2857 [2021-05-21 20:23:39,807 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 [2021-05-21 20:23:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2021-05-21 20:23:39,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1438. [2021-05-21 20:23:39,866 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) [2021-05-21 20:23:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 5653 transitions. [2021-05-21 20:23:39,869 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 5653 transitions. Word has length 25 [2021-05-21 20:23:39,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:39,869 INFO L482 AbstractCegarLoop]: Abstraction has 1438 states and 5653 transitions. [2021-05-21 20:23:39,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:39,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 5653 transitions. [2021-05-21 20:23:39,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:39,871 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:39,871 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] [2021-05-21 20:23:39,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-05-21 20:23:39,871 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]=== [2021-05-21 20:23:39,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:39,871 INFO L82 PathProgramCache]: Analyzing trace with hash -839955683, now seen corresponding path program 382 times [2021-05-21 20:23:39,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:39,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111415344] [2021-05-21 20:23:39,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:39,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:39,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111415344] [2021-05-21 20:23:39,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111415344] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:39,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:39,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:39,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934111195] [2021-05-21 20:23:39,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:39,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:39,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:39,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:39,946 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) [2021-05-21 20:23:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:40,000 INFO L93 Difference]: Finished difference Result 3079 states and 11316 transitions. [2021-05-21 20:23:40,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:40,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:40,006 INFO L225 Difference]: With dead ends: 3079 [2021-05-21 20:23:40,006 INFO L226 Difference]: Without dead ends: 2811 [2021-05-21 20:23:40,006 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-05-21 20:23:40,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1392. [2021-05-21 20:23:40,040 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) [2021-05-21 20:23:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5474 transitions. [2021-05-21 20:23:40,043 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5474 transitions. Word has length 25 [2021-05-21 20:23:40,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:40,043 INFO L482 AbstractCegarLoop]: Abstraction has 1392 states and 5474 transitions. [2021-05-21 20:23:40,043 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) [2021-05-21 20:23:40,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5474 transitions. [2021-05-21 20:23:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:40,045 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:40,045 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] [2021-05-21 20:23:40,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-05-21 20:23:40,045 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]=== [2021-05-21 20:23:40,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:40,045 INFO L82 PathProgramCache]: Analyzing trace with hash 61502075, now seen corresponding path program 383 times [2021-05-21 20:23:40,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:40,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063566524] [2021-05-21 20:23:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:40,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:40,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063566524] [2021-05-21 20:23:40,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063566524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:40,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:40,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:40,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947187447] [2021-05-21 20:23:40,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:40,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:40,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:40,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:40,131 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) [2021-05-21 20:23:40,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:40,195 INFO L93 Difference]: Finished difference Result 3034 states and 11174 transitions. [2021-05-21 20:23:40,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:40,195 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 [2021-05-21 20:23:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:40,200 INFO L225 Difference]: With dead ends: 3034 [2021-05-21 20:23:40,200 INFO L226 Difference]: Without dead ends: 2851 [2021-05-21 20:23:40,200 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 [2021-05-21 20:23:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-05-21 20:23:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1436. [2021-05-21 20:23:40,236 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) [2021-05-21 20:23:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5626 transitions. [2021-05-21 20:23:40,238 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5626 transitions. Word has length 25 [2021-05-21 20:23:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:40,238 INFO L482 AbstractCegarLoop]: Abstraction has 1436 states and 5626 transitions. [2021-05-21 20:23:40,238 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) [2021-05-21 20:23:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5626 transitions. [2021-05-21 20:23:40,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:40,240 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:40,240 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] [2021-05-21 20:23:40,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-05-21 20:23:40,240 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]=== [2021-05-21 20:23:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:40,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1008016931, now seen corresponding path program 384 times [2021-05-21 20:23:40,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:40,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456134262] [2021-05-21 20:23:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:40,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:40,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456134262] [2021-05-21 20:23:40,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456134262] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:40,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:40,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:40,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674590315] [2021-05-21 20:23:40,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:40,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:40,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:40,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:40,356 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) [2021-05-21 20:23:40,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:40,412 INFO L93 Difference]: Finished difference Result 3073 states and 11277 transitions. [2021-05-21 20:23:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:40,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:40,417 INFO L225 Difference]: With dead ends: 3073 [2021-05-21 20:23:40,417 INFO L226 Difference]: Without dead ends: 2777 [2021-05-21 20:23:40,417 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 [2021-05-21 20:23:40,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2021-05-21 20:23:40,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 1362. [2021-05-21 20:23:40,451 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) [2021-05-21 20:23:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5385 transitions. [2021-05-21 20:23:40,453 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5385 transitions. Word has length 25 [2021-05-21 20:23:40,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:40,454 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 5385 transitions. [2021-05-21 20:23:40,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5385 transitions. [2021-05-21 20:23:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:40,455 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:40,455 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:40,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-05-21 20:23:40,455 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]=== [2021-05-21 20:23:40,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:40,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1091571107, now seen corresponding path program 385 times [2021-05-21 20:23:40,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:40,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263548057] [2021-05-21 20:23:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:40,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:40,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263548057] [2021-05-21 20:23:40,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263548057] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:40,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:40,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:40,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160215043] [2021-05-21 20:23:40,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:40,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:40,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:40,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:40,544 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) [2021-05-21 20:23:40,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:40,595 INFO L93 Difference]: Finished difference Result 2878 states and 10584 transitions. [2021-05-21 20:23:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:40,595 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 [2021-05-21 20:23:40,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:40,600 INFO L225 Difference]: With dead ends: 2878 [2021-05-21 20:23:40,600 INFO L226 Difference]: Without dead ends: 2719 [2021-05-21 20:23:40,600 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:40,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2021-05-21 20:23:40,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 1394. [2021-05-21 20:23:40,635 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) [2021-05-21 20:23:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5497 transitions. [2021-05-21 20:23:40,637 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5497 transitions. Word has length 25 [2021-05-21 20:23:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:40,637 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 5497 transitions. [2021-05-21 20:23:40,637 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) [2021-05-21 20:23:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5497 transitions. [2021-05-21 20:23:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:40,640 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:40,640 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] [2021-05-21 20:23:40,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-05-21 20:23:40,640 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]=== [2021-05-21 20:23:40,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:40,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2099869091, now seen corresponding path program 386 times [2021-05-21 20:23:40,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:40,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866492527] [2021-05-21 20:23:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:40,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:40,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866492527] [2021-05-21 20:23:40,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866492527] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:40,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:40,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:40,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058219586] [2021-05-21 20:23:40,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:40,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:40,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:40,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:40,732 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) [2021-05-21 20:23:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:40,784 INFO L93 Difference]: Finished difference Result 2941 states and 10791 transitions. [2021-05-21 20:23:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:40,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:40,789 INFO L225 Difference]: With dead ends: 2941 [2021-05-21 20:23:40,789 INFO L226 Difference]: Without dead ends: 2687 [2021-05-21 20:23:40,789 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 [2021-05-21 20:23:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-05-21 20:23:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1362. [2021-05-21 20:23:40,823 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) [2021-05-21 20:23:40,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5369 transitions. [2021-05-21 20:23:40,825 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5369 transitions. Word has length 25 [2021-05-21 20:23:40,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:40,825 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 5369 transitions. [2021-05-21 20:23:40,825 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) [2021-05-21 20:23:40,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5369 transitions. [2021-05-21 20:23:40,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:40,827 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:40,827 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] [2021-05-21 20:23:40,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-05-21 20:23:40,827 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]=== [2021-05-21 20:23:40,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:40,827 INFO L82 PathProgramCache]: Analyzing trace with hash -102537601, now seen corresponding path program 387 times [2021-05-21 20:23:40,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:40,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68112152] [2021-05-21 20:23:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:40,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:40,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68112152] [2021-05-21 20:23:40,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68112152] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:40,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:40,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:40,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894303933] [2021-05-21 20:23:40,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:40,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:40,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:40,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:40,918 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) [2021-05-21 20:23:40,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:40,972 INFO L93 Difference]: Finished difference Result 2827 states and 10385 transitions. [2021-05-21 20:23:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:40,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:40,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:40,977 INFO L225 Difference]: With dead ends: 2827 [2021-05-21 20:23:40,977 INFO L226 Difference]: Without dead ends: 2668 [2021-05-21 20:23:40,977 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 [2021-05-21 20:23:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2021-05-21 20:23:41,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 1378. [2021-05-21 20:23:41,010 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) [2021-05-21 20:23:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5417 transitions. [2021-05-21 20:23:41,013 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5417 transitions. Word has length 25 [2021-05-21 20:23:41,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:41,013 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 5417 transitions. [2021-05-21 20:23:41,013 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) [2021-05-21 20:23:41,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5417 transitions. [2021-05-21 20:23:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:41,015 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:41,015 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] [2021-05-21 20:23:41,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-05-21 20:23:41,015 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]=== [2021-05-21 20:23:41,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:41,015 INFO L82 PathProgramCache]: Analyzing trace with hash 905760383, now seen corresponding path program 388 times [2021-05-21 20:23:41,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:41,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037896481] [2021-05-21 20:23:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:41,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:41,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037896481] [2021-05-21 20:23:41,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037896481] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:41,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:41,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:41,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045786632] [2021-05-21 20:23:41,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:41,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:41,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:41,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:41,108 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) [2021-05-21 20:23:41,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:41,175 INFO L93 Difference]: Finished difference Result 2855 states and 10473 transitions. [2021-05-21 20:23:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:41,175 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 [2021-05-21 20:23:41,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:41,180 INFO L225 Difference]: With dead ends: 2855 [2021-05-21 20:23:41,180 INFO L226 Difference]: Without dead ends: 2652 [2021-05-21 20:23:41,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2021-05-21 20:23:41,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 1362. [2021-05-21 20:23:41,213 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) [2021-05-21 20:23:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5361 transitions. [2021-05-21 20:23:41,215 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5361 transitions. Word has length 25 [2021-05-21 20:23:41,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:41,215 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 5361 transitions. [2021-05-21 20:23:41,215 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) [2021-05-21 20:23:41,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5361 transitions. [2021-05-21 20:23:41,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:41,217 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:41,217 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] [2021-05-21 20:23:41,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-05-21 20:23:41,217 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]=== [2021-05-21 20:23:41,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:41,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1700960641, now seen corresponding path program 389 times [2021-05-21 20:23:41,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:41,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342334357] [2021-05-21 20:23:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:41,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:41,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342334357] [2021-05-21 20:23:41,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342334357] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:41,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:41,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:41,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18405710] [2021-05-21 20:23:41,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:41,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:41,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:41,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:41,304 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) [2021-05-21 20:23:41,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:41,367 INFO L93 Difference]: Finished difference Result 2948 states and 10827 transitions. [2021-05-21 20:23:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:41,367 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 [2021-05-21 20:23:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:41,372 INFO L225 Difference]: With dead ends: 2948 [2021-05-21 20:23:41,372 INFO L226 Difference]: Without dead ends: 2761 [2021-05-21 20:23:41,372 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 [2021-05-21 20:23:41,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-05-21 20:23:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1408. [2021-05-21 20:23:41,406 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) [2021-05-21 20:23:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 5518 transitions. [2021-05-21 20:23:41,409 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 5518 transitions. Word has length 25 [2021-05-21 20:23:41,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:41,409 INFO L482 AbstractCegarLoop]: Abstraction has 1408 states and 5518 transitions. [2021-05-21 20:23:41,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:41,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 5518 transitions. [2021-05-21 20:23:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:41,411 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:41,411 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:41,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-05-21 20:23:41,411 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]=== [2021-05-21 20:23:41,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:41,411 INFO L82 PathProgramCache]: Analyzing trace with hash -2054100131, now seen corresponding path program 390 times [2021-05-21 20:23:41,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:41,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098988115] [2021-05-21 20:23:41,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:41,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:41,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098988115] [2021-05-21 20:23:41,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098988115] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:41,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:41,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:41,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446971463] [2021-05-21 20:23:41,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:41,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:41,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:41,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:41,519 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) [2021-05-21 20:23:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:41,574 INFO L93 Difference]: Finished difference Result 2983 states and 10916 transitions. [2021-05-21 20:23:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:41,574 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 [2021-05-21 20:23:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:41,579 INFO L225 Difference]: With dead ends: 2983 [2021-05-21 20:23:41,579 INFO L226 Difference]: Without dead ends: 2699 [2021-05-21 20:23:41,579 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:41,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2021-05-21 20:23:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 1346. [2021-05-21 20:23:41,612 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) [2021-05-21 20:23:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 5305 transitions. [2021-05-21 20:23:41,615 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 5305 transitions. Word has length 25 [2021-05-21 20:23:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:41,615 INFO L482 AbstractCegarLoop]: Abstraction has 1346 states and 5305 transitions. [2021-05-21 20:23:41,615 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) [2021-05-21 20:23:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 5305 transitions. [2021-05-21 20:23:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:41,616 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:41,616 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:41,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-05-21 20:23:41,616 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]=== [2021-05-21 20:23:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:41,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1281055325, now seen corresponding path program 391 times [2021-05-21 20:23:41,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:41,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581795483] [2021-05-21 20:23:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:41,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:41,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581795483] [2021-05-21 20:23:41,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581795483] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:41,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:41,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:41,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965082377] [2021-05-21 20:23:41,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:41,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:41,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:41,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:41,718 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) [2021-05-21 20:23:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:41,770 INFO L93 Difference]: Finished difference Result 2828 states and 10385 transitions. [2021-05-21 20:23:41,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:41,771 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 [2021-05-21 20:23:41,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:41,775 INFO L225 Difference]: With dead ends: 2828 [2021-05-21 20:23:41,775 INFO L226 Difference]: Without dead ends: 2669 [2021-05-21 20:23:41,776 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 [2021-05-21 20:23:41,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2021-05-21 20:23:41,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 1394. [2021-05-21 20:23:41,809 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) [2021-05-21 20:23:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5489 transitions. [2021-05-21 20:23:41,812 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5489 transitions. Word has length 25 [2021-05-21 20:23:41,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:41,812 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 5489 transitions. [2021-05-21 20:23:41,812 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) [2021-05-21 20:23:41,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5489 transitions. [2021-05-21 20:23:41,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:41,829 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:41,829 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] [2021-05-21 20:23:41,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-05-21 20:23:41,829 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]=== [2021-05-21 20:23:41,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:41,830 INFO L82 PathProgramCache]: Analyzing trace with hash 272757341, now seen corresponding path program 392 times [2021-05-21 20:23:41,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:41,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819208190] [2021-05-21 20:23:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:41,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:41,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819208190] [2021-05-21 20:23:41,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819208190] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:41,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:41,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:41,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657513505] [2021-05-21 20:23:41,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:41,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:41,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:41,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:41,920 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) [2021-05-21 20:23:41,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:41,967 INFO L93 Difference]: Finished difference Result 2891 states and 10592 transitions. [2021-05-21 20:23:41,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:41,968 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 [2021-05-21 20:23:41,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:41,972 INFO L225 Difference]: With dead ends: 2891 [2021-05-21 20:23:41,972 INFO L226 Difference]: Without dead ends: 2637 [2021-05-21 20:23:41,972 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 [2021-05-21 20:23:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2021-05-21 20:23:42,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 1362. [2021-05-21 20:23:42,005 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) [2021-05-21 20:23:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5361 transitions. [2021-05-21 20:23:42,008 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5361 transitions. Word has length 25 [2021-05-21 20:23:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:42,008 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 5361 transitions. [2021-05-21 20:23:42,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:42,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5361 transitions. [2021-05-21 20:23:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:42,010 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:42,010 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:42,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-05-21 20:23:42,010 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]=== [2021-05-21 20:23:42,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:42,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1973353955, now seen corresponding path program 393 times [2021-05-21 20:23:42,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:42,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680128659] [2021-05-21 20:23:42,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:42,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:42,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680128659] [2021-05-21 20:23:42,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680128659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:42,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:42,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:42,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371160816] [2021-05-21 20:23:42,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:42,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:42,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:42,099 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) [2021-05-21 20:23:42,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:42,148 INFO L93 Difference]: Finished difference Result 2733 states and 10034 transitions. [2021-05-21 20:23:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:42,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:42,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:42,153 INFO L225 Difference]: With dead ends: 2733 [2021-05-21 20:23:42,153 INFO L226 Difference]: Without dead ends: 2574 [2021-05-21 20:23:42,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2021-05-21 20:23:42,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1378. [2021-05-21 20:23:42,185 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) [2021-05-21 20:23:42,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5409 transitions. [2021-05-21 20:23:42,188 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5409 transitions. Word has length 25 [2021-05-21 20:23:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:42,188 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 5409 transitions. [2021-05-21 20:23:42,188 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) [2021-05-21 20:23:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5409 transitions. [2021-05-21 20:23:42,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:42,190 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:42,190 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:42,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-05-21 20:23:42,190 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]=== [2021-05-21 20:23:42,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:42,190 INFO L82 PathProgramCache]: Analyzing trace with hash 379341341, now seen corresponding path program 394 times [2021-05-21 20:23:42,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:42,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713941712] [2021-05-21 20:23:42,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:42,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:42,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713941712] [2021-05-21 20:23:42,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713941712] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:42,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:42,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:42,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976315762] [2021-05-21 20:23:42,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:42,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:42,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:42,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:42,275 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) [2021-05-21 20:23:42,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:42,339 INFO L93 Difference]: Finished difference Result 2621 states and 9697 transitions. [2021-05-21 20:23:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:42,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:42,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:42,343 INFO L225 Difference]: With dead ends: 2621 [2021-05-21 20:23:42,343 INFO L226 Difference]: Without dead ends: 2430 [2021-05-21 20:23:42,344 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 [2021-05-21 20:23:42,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2021-05-21 20:23:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1362. [2021-05-21 20:23:42,376 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) [2021-05-21 20:23:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5353 transitions. [2021-05-21 20:23:42,378 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5353 transitions. Word has length 25 [2021-05-21 20:23:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:42,378 INFO L482 AbstractCegarLoop]: Abstraction has 1362 states and 5353 transitions. [2021-05-21 20:23:42,378 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) [2021-05-21 20:23:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5353 transitions. [2021-05-21 20:23:42,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:42,380 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:42,380 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] [2021-05-21 20:23:42,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-05-21 20:23:42,380 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]=== [2021-05-21 20:23:42,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:42,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2067587613, now seen corresponding path program 395 times [2021-05-21 20:23:42,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:42,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681468996] [2021-05-21 20:23:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:42,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:42,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681468996] [2021-05-21 20:23:42,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681468996] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:42,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:42,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:42,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618997685] [2021-05-21 20:23:42,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:42,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:42,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:42,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:42,476 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) [2021-05-21 20:23:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:42,536 INFO L93 Difference]: Finished difference Result 2868 states and 10525 transitions. [2021-05-21 20:23:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:42,537 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 [2021-05-21 20:23:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:42,541 INFO L225 Difference]: With dead ends: 2868 [2021-05-21 20:23:42,541 INFO L226 Difference]: Without dead ends: 2693 [2021-05-21 20:23:42,542 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 [2021-05-21 20:23:42,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-05-21 20:23:42,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1402. [2021-05-21 20:23:42,575 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) [2021-05-21 20:23:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5493 transitions. [2021-05-21 20:23:42,579 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5493 transitions. Word has length 25 [2021-05-21 20:23:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:42,579 INFO L482 AbstractCegarLoop]: Abstraction has 1402 states and 5493 transitions. [2021-05-21 20:23:42,579 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) [2021-05-21 20:23:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5493 transitions. [2021-05-21 20:23:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:42,581 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:42,581 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] [2021-05-21 20:23:42,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-05-21 20:23:42,581 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]=== [2021-05-21 20:23:42,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:42,581 INFO L82 PathProgramCache]: Analyzing trace with hash 412063227, now seen corresponding path program 396 times [2021-05-21 20:23:42,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:42,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040770994] [2021-05-21 20:23:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:42,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:42,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040770994] [2021-05-21 20:23:42,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040770994] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:42,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:42,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:42,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274156044] [2021-05-21 20:23:42,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:42,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:42,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:42,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:42,676 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) [2021-05-21 20:23:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:42,723 INFO L93 Difference]: Finished difference Result 2820 states and 10325 transitions. [2021-05-21 20:23:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:42,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:42,728 INFO L225 Difference]: With dead ends: 2820 [2021-05-21 20:23:42,728 INFO L226 Difference]: Without dead ends: 2542 [2021-05-21 20:23:42,728 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 [2021-05-21 20:23:42,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2021-05-21 20:23:42,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1346. [2021-05-21 20:23:42,762 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) [2021-05-21 20:23:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 5297 transitions. [2021-05-21 20:23:42,764 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 5297 transitions. Word has length 25 [2021-05-21 20:23:42,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:42,764 INFO L482 AbstractCegarLoop]: Abstraction has 1346 states and 5297 transitions. [2021-05-21 20:23:42,764 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) [2021-05-21 20:23:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 5297 transitions. [2021-05-21 20:23:42,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:42,766 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:42,766 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] [2021-05-21 20:23:42,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-05-21 20:23:42,766 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]=== [2021-05-21 20:23:42,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:42,766 INFO L82 PathProgramCache]: Analyzing trace with hash 119412159, now seen corresponding path program 397 times [2021-05-21 20:23:42,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:42,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116912316] [2021-05-21 20:23:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:42,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:42,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116912316] [2021-05-21 20:23:42,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116912316] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:42,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:42,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:42,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582330844] [2021-05-21 20:23:42,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:42,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:42,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:42,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:42,851 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) [2021-05-21 20:23:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:42,902 INFO L93 Difference]: Finished difference Result 2718 states and 9975 transitions. [2021-05-21 20:23:42,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:42,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:42,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:42,906 INFO L225 Difference]: With dead ends: 2718 [2021-05-21 20:23:42,906 INFO L226 Difference]: Without dead ends: 2559 [2021-05-21 20:23:42,907 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 [2021-05-21 20:23:42,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2021-05-21 20:23:42,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 1370. [2021-05-21 20:23:42,939 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) [2021-05-21 20:23:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5381 transitions. [2021-05-21 20:23:42,942 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5381 transitions. Word has length 25 [2021-05-21 20:23:42,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:42,942 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5381 transitions. [2021-05-21 20:23:42,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:42,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5381 transitions. [2021-05-21 20:23:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:42,944 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:42,944 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:42,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-05-21 20:23:42,944 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]=== [2021-05-21 20:23:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:42,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1127710143, now seen corresponding path program 398 times [2021-05-21 20:23:42,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:42,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876462935] [2021-05-21 20:23:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:43,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:43,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876462935] [2021-05-21 20:23:43,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876462935] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:43,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:43,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:43,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576421225] [2021-05-21 20:23:43,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:43,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:43,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:43,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:43,027 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) [2021-05-21 20:23:43,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:43,088 INFO L93 Difference]: Finished difference Result 2746 states and 10063 transitions. [2021-05-21 20:23:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:43,088 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 [2021-05-21 20:23:43,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:43,093 INFO L225 Difference]: With dead ends: 2746 [2021-05-21 20:23:43,093 INFO L226 Difference]: Without dead ends: 2543 [2021-05-21 20:23:43,093 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 [2021-05-21 20:23:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2021-05-21 20:23:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1354. [2021-05-21 20:23:43,126 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) [2021-05-21 20:23:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5325 transitions. [2021-05-21 20:23:43,128 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5325 transitions. Word has length 25 [2021-05-21 20:23:43,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:43,128 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5325 transitions. [2021-05-21 20:23:43,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5325 transitions. [2021-05-21 20:23:43,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:43,130 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:43,130 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:43,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-05-21 20:23:43,130 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]=== [2021-05-21 20:23:43,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:43,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1996667491, now seen corresponding path program 399 times [2021-05-21 20:23:43,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:43,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167761541] [2021-05-21 20:23:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:43,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:43,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167761541] [2021-05-21 20:23:43,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167761541] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:43,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:43,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:43,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658911691] [2021-05-21 20:23:43,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:43,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:43,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:43,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:43,211 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) [2021-05-21 20:23:43,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:43,261 INFO L93 Difference]: Finished difference Result 2674 states and 9815 transitions. [2021-05-21 20:23:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:43,262 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 [2021-05-21 20:23:43,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:43,266 INFO L225 Difference]: With dead ends: 2674 [2021-05-21 20:23:43,266 INFO L226 Difference]: Without dead ends: 2515 [2021-05-21 20:23:43,266 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 [2021-05-21 20:23:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2021-05-21 20:23:43,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 1370. [2021-05-21 20:23:43,298 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) [2021-05-21 20:23:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5373 transitions. [2021-05-21 20:23:43,301 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5373 transitions. Word has length 25 [2021-05-21 20:23:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:43,301 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5373 transitions. [2021-05-21 20:23:43,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5373 transitions. [2021-05-21 20:23:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:43,303 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:43,303 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] [2021-05-21 20:23:43,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-05-21 20:23:43,303 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]=== [2021-05-21 20:23:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:43,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1652768191, now seen corresponding path program 400 times [2021-05-21 20:23:43,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:43,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58814050] [2021-05-21 20:23:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:43,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:43,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58814050] [2021-05-21 20:23:43,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58814050] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:43,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:43,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:43,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753441323] [2021-05-21 20:23:43,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:43,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:43,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:43,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:43,380 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) [2021-05-21 20:23:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:43,444 INFO L93 Difference]: Finished difference Result 2562 states and 9478 transitions. [2021-05-21 20:23:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:43,445 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 [2021-05-21 20:23:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:43,449 INFO L225 Difference]: With dead ends: 2562 [2021-05-21 20:23:43,449 INFO L226 Difference]: Without dead ends: 2371 [2021-05-21 20:23:43,449 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 [2021-05-21 20:23:43,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2021-05-21 20:23:43,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1354. [2021-05-21 20:23:43,481 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) [2021-05-21 20:23:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5317 transitions. [2021-05-21 20:23:43,483 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5317 transitions. Word has length 25 [2021-05-21 20:23:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:43,483 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5317 transitions. [2021-05-21 20:23:43,483 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) [2021-05-21 20:23:43,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5317 transitions. [2021-05-21 20:23:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:43,485 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:43,485 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] [2021-05-21 20:23:43,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-05-21 20:23:43,485 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]=== [2021-05-21 20:23:43,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:43,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1379875393, now seen corresponding path program 401 times [2021-05-21 20:23:43,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:43,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143902037] [2021-05-21 20:23:43,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:43,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:43,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143902037] [2021-05-21 20:23:43,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143902037] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:43,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:43,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:43,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89577889] [2021-05-21 20:23:43,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:43,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:43,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:43,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:43,561 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) [2021-05-21 20:23:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:43,623 INFO L93 Difference]: Finished difference Result 2710 states and 9947 transitions. [2021-05-21 20:23:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:43,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:43,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:43,628 INFO L225 Difference]: With dead ends: 2710 [2021-05-21 20:23:43,628 INFO L226 Difference]: Without dead ends: 2523 [2021-05-21 20:23:43,628 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 [2021-05-21 20:23:43,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2021-05-21 20:23:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 1378. [2021-05-21 20:23:43,661 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) [2021-05-21 20:23:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5393 transitions. [2021-05-21 20:23:43,663 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5393 transitions. Word has length 25 [2021-05-21 20:23:43,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:43,663 INFO L482 AbstractCegarLoop]: Abstraction has 1378 states and 5393 transitions. [2021-05-21 20:23:43,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:43,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5393 transitions. [2021-05-21 20:23:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:43,665 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:43,665 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:43,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-05-21 20:23:43,665 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]=== [2021-05-21 20:23:43,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:43,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1522947357, now seen corresponding path program 402 times [2021-05-21 20:23:43,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:43,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52038694] [2021-05-21 20:23:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:43,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:43,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52038694] [2021-05-21 20:23:43,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52038694] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:43,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:43,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:43,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966196892] [2021-05-21 20:23:43,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:43,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:43,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:43,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:43,741 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) [2021-05-21 20:23:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:43,812 INFO L93 Difference]: Finished difference Result 2570 states and 9498 transitions. [2021-05-21 20:23:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:43,812 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 [2021-05-21 20:23:43,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:43,816 INFO L225 Difference]: With dead ends: 2570 [2021-05-21 20:23:43,816 INFO L226 Difference]: Without dead ends: 2363 [2021-05-21 20:23:43,816 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 [2021-05-21 20:23:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2021-05-21 20:23:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1346. [2021-05-21 20:23:43,847 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) [2021-05-21 20:23:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 5293 transitions. [2021-05-21 20:23:43,850 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 5293 transitions. Word has length 25 [2021-05-21 20:23:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:43,850 INFO L482 AbstractCegarLoop]: Abstraction has 1346 states and 5293 transitions. [2021-05-21 20:23:43,850 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:43,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 5293 transitions. [2021-05-21 20:23:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:43,852 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:43,852 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:43,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-05-21 20:23:43,852 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]=== [2021-05-21 20:23:43,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:43,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1822121407, now seen corresponding path program 403 times [2021-05-21 20:23:43,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:43,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33858405] [2021-05-21 20:23:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:43,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:43,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33858405] [2021-05-21 20:23:43,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33858405] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:43,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:43,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:43,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232862284] [2021-05-21 20:23:43,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:43,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:43,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:43,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:43,948 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) [2021-05-21 20:23:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:44,016 INFO L93 Difference]: Finished difference Result 2915 states and 10741 transitions. [2021-05-21 20:23:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:44,016 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 [2021-05-21 20:23:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:44,021 INFO L225 Difference]: With dead ends: 2915 [2021-05-21 20:23:44,021 INFO L226 Difference]: Without dead ends: 2728 [2021-05-21 20:23:44,021 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 [2021-05-21 20:23:44,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2021-05-21 20:23:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 1390. [2021-05-21 20:23:44,055 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) [2021-05-21 20:23:44,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5461 transitions. [2021-05-21 20:23:44,058 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5461 transitions. Word has length 25 [2021-05-21 20:23:44,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:44,058 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5461 transitions. [2021-05-21 20:23:44,058 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) [2021-05-21 20:23:44,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5461 transitions. [2021-05-21 20:23:44,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:44,059 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:44,060 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] [2021-05-21 20:23:44,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-05-21 20:23:44,060 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]=== [2021-05-21 20:23:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:44,060 INFO L82 PathProgramCache]: Analyzing trace with hash 429976861, now seen corresponding path program 404 times [2021-05-21 20:23:44,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:44,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839780903] [2021-05-21 20:23:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:44,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:44,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839780903] [2021-05-21 20:23:44,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839780903] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:44,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:44,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:44,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840720839] [2021-05-21 20:23:44,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:44,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:44,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:44,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:44,134 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) [2021-05-21 20:23:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:44,198 INFO L93 Difference]: Finished difference Result 2903 states and 10677 transitions. [2021-05-21 20:23:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:44,199 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 [2021-05-21 20:23:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:44,203 INFO L225 Difference]: With dead ends: 2903 [2021-05-21 20:23:44,204 INFO L226 Difference]: Without dead ends: 2704 [2021-05-21 20:23:44,204 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 [2021-05-21 20:23:44,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2021-05-21 20:23:44,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 1366. [2021-05-21 20:23:44,237 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) [2021-05-21 20:23:44,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 5373 transitions. [2021-05-21 20:23:44,239 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 5373 transitions. Word has length 25 [2021-05-21 20:23:44,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:44,239 INFO L482 AbstractCegarLoop]: Abstraction has 1366 states and 5373 transitions. [2021-05-21 20:23:44,239 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) [2021-05-21 20:23:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 5373 transitions. [2021-05-21 20:23:44,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:44,241 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:44,241 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] [2021-05-21 20:23:44,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-05-21 20:23:44,242 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]=== [2021-05-21 20:23:44,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:44,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1085981, now seen corresponding path program 405 times [2021-05-21 20:23:44,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:44,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317492139] [2021-05-21 20:23:44,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:44,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:44,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:44,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317492139] [2021-05-21 20:23:44,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317492139] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:44,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:44,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:44,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351966547] [2021-05-21 20:23:44,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:44,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:44,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:44,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:44,335 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) [2021-05-21 20:23:44,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:44,397 INFO L93 Difference]: Finished difference Result 2938 states and 10788 transitions. [2021-05-21 20:23:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:44,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:44,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:44,402 INFO L225 Difference]: With dead ends: 2938 [2021-05-21 20:23:44,402 INFO L226 Difference]: Without dead ends: 2751 [2021-05-21 20:23:44,402 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 [2021-05-21 20:23:44,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2021-05-21 20:23:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 1412. [2021-05-21 20:23:44,437 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) [2021-05-21 20:23:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5530 transitions. [2021-05-21 20:23:44,439 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5530 transitions. Word has length 25 [2021-05-21 20:23:44,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:44,439 INFO L482 AbstractCegarLoop]: Abstraction has 1412 states and 5530 transitions. [2021-05-21 20:23:44,439 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) [2021-05-21 20:23:44,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5530 transitions. [2021-05-21 20:23:44,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:44,441 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:44,441 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] [2021-05-21 20:23:44,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-05-21 20:23:44,441 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]=== [2021-05-21 20:23:44,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:44,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1369846429, now seen corresponding path program 406 times [2021-05-21 20:23:44,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:44,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019997196] [2021-05-21 20:23:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:44,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:44,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019997196] [2021-05-21 20:23:44,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019997196] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:44,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:44,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:44,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822880970] [2021-05-21 20:23:44,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:44,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:44,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:44,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:44,517 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) [2021-05-21 20:23:44,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:44,567 INFO L93 Difference]: Finished difference Result 2973 states and 10877 transitions. [2021-05-21 20:23:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:44,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:44,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:44,573 INFO L225 Difference]: With dead ends: 2973 [2021-05-21 20:23:44,573 INFO L226 Difference]: Without dead ends: 2705 [2021-05-21 20:23:44,573 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:44,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2021-05-21 20:23:44,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 1366. [2021-05-21 20:23:44,606 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) [2021-05-21 20:23:44,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 5353 transitions. [2021-05-21 20:23:44,609 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 5353 transitions. Word has length 25 [2021-05-21 20:23:44,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:44,609 INFO L482 AbstractCegarLoop]: Abstraction has 1366 states and 5353 transitions. [2021-05-21 20:23:44,609 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) [2021-05-21 20:23:44,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 5353 transitions. [2021-05-21 20:23:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:44,610 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:44,610 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] [2021-05-21 20:23:44,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-05-21 20:23:44,611 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]=== [2021-05-21 20:23:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:44,611 INFO L82 PathProgramCache]: Analyzing trace with hash 365343355, now seen corresponding path program 407 times [2021-05-21 20:23:44,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:44,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998296268] [2021-05-21 20:23:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:44,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:44,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998296268] [2021-05-21 20:23:44,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998296268] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:44,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:44,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:44,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504914820] [2021-05-21 20:23:44,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:44,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:44,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:44,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:44,729 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) [2021-05-21 20:23:44,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:44,796 INFO L93 Difference]: Finished difference Result 2908 states and 10665 transitions. [2021-05-21 20:23:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:44,796 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 [2021-05-21 20:23:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:44,801 INFO L225 Difference]: With dead ends: 2908 [2021-05-21 20:23:44,801 INFO L226 Difference]: Without dead ends: 2733 [2021-05-21 20:23:44,801 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 [2021-05-21 20:23:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2021-05-21 20:23:44,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 1406. [2021-05-21 20:23:44,835 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) [2021-05-21 20:23:44,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 5493 transitions. [2021-05-21 20:23:44,838 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 5493 transitions. Word has length 25 [2021-05-21 20:23:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:44,838 INFO L482 AbstractCegarLoop]: Abstraction has 1406 states and 5493 transitions. [2021-05-21 20:23:44,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 5493 transitions. [2021-05-21 20:23:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:44,839 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:44,839 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] [2021-05-21 20:23:44,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-05-21 20:23:44,840 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]=== [2021-05-21 20:23:44,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:44,840 INFO L82 PathProgramCache]: Analyzing trace with hash 583694941, now seen corresponding path program 408 times [2021-05-21 20:23:44,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:44,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836159361] [2021-05-21 20:23:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:44,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:44,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836159361] [2021-05-21 20:23:44,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836159361] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:44,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:44,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:44,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294126579] [2021-05-21 20:23:44,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:44,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:44,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:44,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:44,926 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) [2021-05-21 20:23:44,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:44,981 INFO L93 Difference]: Finished difference Result 2860 states and 10465 transitions. [2021-05-21 20:23:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:44,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:44,986 INFO L225 Difference]: With dead ends: 2860 [2021-05-21 20:23:44,986 INFO L226 Difference]: Without dead ends: 2570 [2021-05-21 20:23:44,986 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 [2021-05-21 20:23:45,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-05-21 20:23:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1338. [2021-05-21 20:23:45,019 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) [2021-05-21 20:23:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5269 transitions. [2021-05-21 20:23:45,021 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5269 transitions. Word has length 25 [2021-05-21 20:23:45,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:45,021 INFO L482 AbstractCegarLoop]: Abstraction has 1338 states and 5269 transitions. [2021-05-21 20:23:45,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:45,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5269 transitions. [2021-05-21 20:23:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:45,023 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:45,023 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:45,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-05-21 20:23:45,023 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]=== [2021-05-21 20:23:45,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:45,023 INFO L82 PathProgramCache]: Analyzing trace with hash 517434815, now seen corresponding path program 409 times [2021-05-21 20:23:45,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:45,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099941669] [2021-05-21 20:23:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:45,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:45,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099941669] [2021-05-21 20:23:45,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099941669] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:45,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:45,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:45,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500793005] [2021-05-21 20:23:45,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:45,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:45,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:45,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:45,123 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) [2021-05-21 20:23:45,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:45,174 INFO L93 Difference]: Finished difference Result 2810 states and 10302 transitions. [2021-05-21 20:23:45,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:45,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:45,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:45,179 INFO L225 Difference]: With dead ends: 2810 [2021-05-21 20:23:45,179 INFO L226 Difference]: Without dead ends: 2651 [2021-05-21 20:23:45,179 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 [2021-05-21 20:23:45,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2021-05-21 20:23:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 1370. [2021-05-21 20:23:45,213 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) [2021-05-21 20:23:45,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5381 transitions. [2021-05-21 20:23:45,216 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5381 transitions. Word has length 25 [2021-05-21 20:23:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:45,216 INFO L482 AbstractCegarLoop]: Abstraction has 1370 states and 5381 transitions. [2021-05-21 20:23:45,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:45,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5381 transitions. [2021-05-21 20:23:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:45,218 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:45,218 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:45,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-05-21 20:23:45,218 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]=== [2021-05-21 20:23:45,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:45,218 INFO L82 PathProgramCache]: Analyzing trace with hash -490863169, now seen corresponding path program 410 times [2021-05-21 20:23:45,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:45,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800153917] [2021-05-21 20:23:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:45,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:45,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800153917] [2021-05-21 20:23:45,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800153917] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:45,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:45,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:45,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697747376] [2021-05-21 20:23:45,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:45,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:45,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:45,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:45,317 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) [2021-05-21 20:23:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:45,368 INFO L93 Difference]: Finished difference Result 2873 states and 10509 transitions. [2021-05-21 20:23:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:45,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:45,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:45,373 INFO L225 Difference]: With dead ends: 2873 [2021-05-21 20:23:45,373 INFO L226 Difference]: Without dead ends: 2619 [2021-05-21 20:23:45,374 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 [2021-05-21 20:23:45,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2021-05-21 20:23:45,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 1338. [2021-05-21 20:23:45,407 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) [2021-05-21 20:23:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5253 transitions. [2021-05-21 20:23:45,409 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5253 transitions. Word has length 25 [2021-05-21 20:23:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:45,410 INFO L482 AbstractCegarLoop]: Abstraction has 1338 states and 5253 transitions. [2021-05-21 20:23:45,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:45,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5253 transitions. [2021-05-21 20:23:45,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:45,411 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:45,411 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:45,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-05-21 20:23:45,411 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]=== [2021-05-21 20:23:45,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:45,412 INFO L82 PathProgramCache]: Analyzing trace with hash 523187583, now seen corresponding path program 411 times [2021-05-21 20:23:45,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:45,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168549595] [2021-05-21 20:23:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:45,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:45,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168549595] [2021-05-21 20:23:45,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168549595] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:45,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:45,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:45,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048813139] [2021-05-21 20:23:45,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:45,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:45,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:45,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:45,503 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) [2021-05-21 20:23:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:45,558 INFO L93 Difference]: Finished difference Result 2755 states and 10091 transitions. [2021-05-21 20:23:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:45,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:45,563 INFO L225 Difference]: With dead ends: 2755 [2021-05-21 20:23:45,563 INFO L226 Difference]: Without dead ends: 2596 [2021-05-21 20:23:45,563 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 [2021-05-21 20:23:45,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2021-05-21 20:23:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 1354. [2021-05-21 20:23:45,597 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) [2021-05-21 20:23:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5301 transitions. [2021-05-21 20:23:45,599 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5301 transitions. Word has length 25 [2021-05-21 20:23:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:45,599 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5301 transitions. [2021-05-21 20:23:45,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5301 transitions. [2021-05-21 20:23:45,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:45,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:45,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:45,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-05-21 20:23:45,601 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]=== [2021-05-21 20:23:45,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:45,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2091283073, now seen corresponding path program 412 times [2021-05-21 20:23:45,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:45,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694148441] [2021-05-21 20:23:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:45,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:45,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:45,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694148441] [2021-05-21 20:23:45,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694148441] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:45,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:45,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:45,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147311807] [2021-05-21 20:23:45,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:45,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:45,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:45,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:45,695 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) [2021-05-21 20:23:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:45,761 INFO L93 Difference]: Finished difference Result 2779 states and 10167 transitions. [2021-05-21 20:23:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:45,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:45,766 INFO L225 Difference]: With dead ends: 2779 [2021-05-21 20:23:45,766 INFO L226 Difference]: Without dead ends: 2580 [2021-05-21 20:23:45,766 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 [2021-05-21 20:23:45,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2021-05-21 20:23:45,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 1338. [2021-05-21 20:23:45,810 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) [2021-05-21 20:23:45,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5245 transitions. [2021-05-21 20:23:45,812 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5245 transitions. Word has length 25 [2021-05-21 20:23:45,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:45,812 INFO L482 AbstractCegarLoop]: Abstraction has 1338 states and 5245 transitions. [2021-05-21 20:23:45,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5245 transitions. [2021-05-21 20:23:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:45,814 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:45,814 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] [2021-05-21 20:23:45,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-05-21 20:23:45,814 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]=== [2021-05-21 20:23:45,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:45,815 INFO L82 PathProgramCache]: Analyzing trace with hash -403036801, now seen corresponding path program 413 times [2021-05-21 20:23:45,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:45,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317991279] [2021-05-21 20:23:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:45,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:45,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317991279] [2021-05-21 20:23:45,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317991279] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:45,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:45,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:45,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714142088] [2021-05-21 20:23:45,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:45,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:45,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:45,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:45,914 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) [2021-05-21 20:23:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:45,975 INFO L93 Difference]: Finished difference Result 2870 states and 10514 transitions. [2021-05-21 20:23:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:45,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:45,980 INFO L225 Difference]: With dead ends: 2870 [2021-05-21 20:23:45,981 INFO L226 Difference]: Without dead ends: 2687 [2021-05-21 20:23:45,981 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 [2021-05-21 20:23:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-05-21 20:23:46,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1382. [2021-05-21 20:23:46,015 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) [2021-05-21 20:23:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 5397 transitions. [2021-05-21 20:23:46,018 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 5397 transitions. Word has length 25 [2021-05-21 20:23:46,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:46,018 INFO L482 AbstractCegarLoop]: Abstraction has 1382 states and 5397 transitions. [2021-05-21 20:23:46,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:46,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 5397 transitions. [2021-05-21 20:23:46,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:46,020 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:46,020 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] [2021-05-21 20:23:46,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-05-21 20:23:46,020 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]=== [2021-05-21 20:23:46,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:46,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1407368739, now seen corresponding path program 414 times [2021-05-21 20:23:46,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:46,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204838819] [2021-05-21 20:23:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:46,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:46,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204838819] [2021-05-21 20:23:46,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204838819] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:46,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:46,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:46,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772208332] [2021-05-21 20:23:46,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:46,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:46,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:46,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:46,123 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) [2021-05-21 20:23:46,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:46,173 INFO L93 Difference]: Finished difference Result 2909 states and 10617 transitions. [2021-05-21 20:23:46,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:46,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:46,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:46,178 INFO L225 Difference]: With dead ends: 2909 [2021-05-21 20:23:46,179 INFO L226 Difference]: Without dead ends: 2627 [2021-05-21 20:23:46,179 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 [2021-05-21 20:23:46,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2021-05-21 20:23:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 1322. [2021-05-21 20:23:46,212 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) [2021-05-21 20:23:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 5189 transitions. [2021-05-21 20:23:46,214 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 5189 transitions. Word has length 25 [2021-05-21 20:23:46,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:46,214 INFO L482 AbstractCegarLoop]: Abstraction has 1322 states and 5189 transitions. [2021-05-21 20:23:46,215 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) [2021-05-21 20:23:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 5189 transitions. [2021-05-21 20:23:46,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:46,216 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:46,216 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] [2021-05-21 20:23:46,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2021-05-21 20:23:46,216 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]=== [2021-05-21 20:23:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:46,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1975481885, now seen corresponding path program 415 times [2021-05-21 20:23:46,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:46,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645271457] [2021-05-21 20:23:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:46,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:46,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645271457] [2021-05-21 20:23:46,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645271457] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:46,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:46,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:46,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086104419] [2021-05-21 20:23:46,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:46,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:46,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:46,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:46,314 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) [2021-05-21 20:23:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:46,367 INFO L93 Difference]: Finished difference Result 2750 states and 10050 transitions. [2021-05-21 20:23:46,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:46,367 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 [2021-05-21 20:23:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:46,372 INFO L225 Difference]: With dead ends: 2750 [2021-05-21 20:23:46,372 INFO L226 Difference]: Without dead ends: 2591 [2021-05-21 20:23:46,372 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 [2021-05-21 20:23:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-05-21 20:23:46,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 1322. [2021-05-21 20:23:46,405 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) [2021-05-21 20:23:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 5173 transitions. [2021-05-21 20:23:46,408 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 5173 transitions. Word has length 25 [2021-05-21 20:23:46,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:46,408 INFO L482 AbstractCegarLoop]: Abstraction has 1322 states and 5173 transitions. [2021-05-21 20:23:46,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 5173 transitions. [2021-05-21 20:23:46,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:46,409 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:46,410 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:46,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2021-05-21 20:23:46,410 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]=== [2021-05-21 20:23:46,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:46,410 INFO L82 PathProgramCache]: Analyzing trace with hash 967183901, now seen corresponding path program 416 times [2021-05-21 20:23:46,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:46,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470252908] [2021-05-21 20:23:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:46,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:46,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470252908] [2021-05-21 20:23:46,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470252908] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:46,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:46,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:46,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847959376] [2021-05-21 20:23:46,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:46,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:46,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:46,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:46,507 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) [2021-05-21 20:23:46,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:46,555 INFO L93 Difference]: Finished difference Result 2813 states and 10257 transitions. [2021-05-21 20:23:46,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:46,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:46,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:46,560 INFO L225 Difference]: With dead ends: 2813 [2021-05-21 20:23:46,560 INFO L226 Difference]: Without dead ends: 2559 [2021-05-21 20:23:46,561 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 [2021-05-21 20:23:46,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2021-05-21 20:23:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 1290. [2021-05-21 20:23:46,592 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) [2021-05-21 20:23:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 5045 transitions. [2021-05-21 20:23:46,595 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 5045 transitions. Word has length 25 [2021-05-21 20:23:46,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:46,595 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 5045 transitions. [2021-05-21 20:23:46,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 5045 transitions. [2021-05-21 20:23:46,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:46,597 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:46,597 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] [2021-05-21 20:23:46,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2021-05-21 20:23:46,597 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]=== [2021-05-21 20:23:46,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:46,597 INFO L82 PathProgramCache]: Analyzing trace with hash 276432255, now seen corresponding path program 417 times [2021-05-21 20:23:46,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:46,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576414726] [2021-05-21 20:23:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:46,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:46,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576414726] [2021-05-21 20:23:46,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576414726] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:46,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:46,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:46,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38194580] [2021-05-21 20:23:46,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:46,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:46,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:46,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:46,689 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) [2021-05-21 20:23:46,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:46,739 INFO L93 Difference]: Finished difference Result 2655 states and 9699 transitions. [2021-05-21 20:23:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:46,740 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 [2021-05-21 20:23:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:46,744 INFO L225 Difference]: With dead ends: 2655 [2021-05-21 20:23:46,744 INFO L226 Difference]: Without dead ends: 2496 [2021-05-21 20:23:46,744 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 [2021-05-21 20:23:46,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-05-21 20:23:46,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 1306. [2021-05-21 20:23:46,776 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) [2021-05-21 20:23:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5093 transitions. [2021-05-21 20:23:46,778 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5093 transitions. Word has length 25 [2021-05-21 20:23:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:46,778 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5093 transitions. [2021-05-21 20:23:46,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:46,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5093 transitions. [2021-05-21 20:23:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:46,780 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:46,780 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:46,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2021-05-21 20:23:46,780 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]=== [2021-05-21 20:23:46,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:46,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1665839745, now seen corresponding path program 418 times [2021-05-21 20:23:46,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:46,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300723110] [2021-05-21 20:23:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:46,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:46,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300723110] [2021-05-21 20:23:46,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300723110] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:46,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:46,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:46,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165269263] [2021-05-21 20:23:46,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:46,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:46,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:46,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:46,872 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) [2021-05-21 20:23:46,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:46,940 INFO L93 Difference]: Finished difference Result 2543 states and 9362 transitions. [2021-05-21 20:23:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:46,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:46,944 INFO L225 Difference]: With dead ends: 2543 [2021-05-21 20:23:46,945 INFO L226 Difference]: Without dead ends: 2352 [2021-05-21 20:23:46,945 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 [2021-05-21 20:23:46,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-05-21 20:23:46,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 1290. [2021-05-21 20:23:46,976 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) [2021-05-21 20:23:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 5037 transitions. [2021-05-21 20:23:46,978 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 5037 transitions. Word has length 25 [2021-05-21 20:23:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:46,978 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 5037 transitions. [2021-05-21 20:23:46,978 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) [2021-05-21 20:23:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 5037 transitions. [2021-05-21 20:23:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:46,980 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:46,980 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] [2021-05-21 20:23:46,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2021-05-21 20:23:46,980 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]=== [2021-05-21 20:23:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:46,980 INFO L82 PathProgramCache]: Analyzing trace with hash 22406527, now seen corresponding path program 419 times [2021-05-21 20:23:46,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:46,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017172028] [2021-05-21 20:23:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:47,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:47,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017172028] [2021-05-21 20:23:47,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017172028] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:47,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:47,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:47,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184249588] [2021-05-21 20:23:47,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:47,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:47,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:47,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:47,083 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) [2021-05-21 20:23:47,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:47,145 INFO L93 Difference]: Finished difference Result 2790 states and 10190 transitions. [2021-05-21 20:23:47,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:47,145 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 [2021-05-21 20:23:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:47,150 INFO L225 Difference]: With dead ends: 2790 [2021-05-21 20:23:47,150 INFO L226 Difference]: Without dead ends: 2615 [2021-05-21 20:23:47,150 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 [2021-05-21 20:23:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2021-05-21 20:23:47,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 1330. [2021-05-21 20:23:47,183 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) [2021-05-21 20:23:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 5177 transitions. [2021-05-21 20:23:47,186 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 5177 transitions. Word has length 25 [2021-05-21 20:23:47,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:47,186 INFO L482 AbstractCegarLoop]: Abstraction has 1330 states and 5177 transitions. [2021-05-21 20:23:47,186 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) [2021-05-21 20:23:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 5177 transitions. [2021-05-21 20:23:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:47,187 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:47,187 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] [2021-05-21 20:23:47,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2021-05-21 20:23:47,188 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]=== [2021-05-21 20:23:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:47,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1633117859, now seen corresponding path program 420 times [2021-05-21 20:23:47,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:47,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970666380] [2021-05-21 20:23:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:47,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:47,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970666380] [2021-05-21 20:23:47,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970666380] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:47,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:47,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:47,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068662315] [2021-05-21 20:23:47,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:47,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:47,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:47,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:47,290 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) [2021-05-21 20:23:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:47,339 INFO L93 Difference]: Finished difference Result 2742 states and 9990 transitions. [2021-05-21 20:23:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:47,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:47,344 INFO L225 Difference]: With dead ends: 2742 [2021-05-21 20:23:47,344 INFO L226 Difference]: Without dead ends: 2464 [2021-05-21 20:23:47,344 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 [2021-05-21 20:23:47,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2021-05-21 20:23:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1274. [2021-05-21 20:23:47,375 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) [2021-05-21 20:23:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4981 transitions. [2021-05-21 20:23:47,378 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4981 transitions. Word has length 25 [2021-05-21 20:23:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:47,378 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4981 transitions. [2021-05-21 20:23:47,378 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) [2021-05-21 20:23:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4981 transitions. [2021-05-21 20:23:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:47,379 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:47,379 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] [2021-05-21 20:23:47,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2021-05-21 20:23:47,379 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]=== [2021-05-21 20:23:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:47,380 INFO L82 PathProgramCache]: Analyzing trace with hash -227939009, now seen corresponding path program 421 times [2021-05-21 20:23:47,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:47,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841132665] [2021-05-21 20:23:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:47,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:47,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841132665] [2021-05-21 20:23:47,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841132665] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:47,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:47,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:47,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498950080] [2021-05-21 20:23:47,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:47,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:47,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:47,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:47,463 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) [2021-05-21 20:23:47,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:47,515 INFO L93 Difference]: Finished difference Result 2600 states and 9504 transitions. [2021-05-21 20:23:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:47,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:47,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:47,520 INFO L225 Difference]: With dead ends: 2600 [2021-05-21 20:23:47,520 INFO L226 Difference]: Without dead ends: 2441 [2021-05-21 20:23:47,520 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:47,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2021-05-21 20:23:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 1298. [2021-05-21 20:23:47,551 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) [2021-05-21 20:23:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5065 transitions. [2021-05-21 20:23:47,553 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5065 transitions. Word has length 25 [2021-05-21 20:23:47,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:47,553 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5065 transitions. [2021-05-21 20:23:47,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:47,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5065 transitions. [2021-05-21 20:23:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:47,555 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:47,555 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] [2021-05-21 20:23:47,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2021-05-21 20:23:47,555 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]=== [2021-05-21 20:23:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:47,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1452557631, now seen corresponding path program 422 times [2021-05-21 20:23:47,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:47,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149058636] [2021-05-21 20:23:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:47,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:47,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149058636] [2021-05-21 20:23:47,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149058636] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:47,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:47,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:47,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337720679] [2021-05-21 20:23:47,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:47,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:47,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:47,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:47,637 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) [2021-05-21 20:23:47,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:47,702 INFO L93 Difference]: Finished difference Result 2624 states and 9580 transitions. [2021-05-21 20:23:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:47,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:47,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:47,707 INFO L225 Difference]: With dead ends: 2624 [2021-05-21 20:23:47,707 INFO L226 Difference]: Without dead ends: 2425 [2021-05-21 20:23:47,707 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 [2021-05-21 20:23:47,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-05-21 20:23:47,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1282. [2021-05-21 20:23:47,750 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) [2021-05-21 20:23:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 5009 transitions. [2021-05-21 20:23:47,753 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 5009 transitions. Word has length 25 [2021-05-21 20:23:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:47,753 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 5009 transitions. [2021-05-21 20:23:47,753 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) [2021-05-21 20:23:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 5009 transitions. [2021-05-21 20:23:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:47,754 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:47,754 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:47,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2021-05-21 20:23:47,754 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]=== [2021-05-21 20:23:47,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:47,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1074735971, now seen corresponding path program 423 times [2021-05-21 20:23:47,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:47,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557584296] [2021-05-21 20:23:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:47,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:47,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557584296] [2021-05-21 20:23:47,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557584296] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:47,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:47,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:47,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086129703] [2021-05-21 20:23:47,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:47,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:47,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:47,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:47,839 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) [2021-05-21 20:23:47,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:47,908 INFO L93 Difference]: Finished difference Result 2544 states and 9292 transitions. [2021-05-21 20:23:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:47,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:47,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:47,912 INFO L225 Difference]: With dead ends: 2544 [2021-05-21 20:23:47,912 INFO L226 Difference]: Without dead ends: 2385 [2021-05-21 20:23:47,913 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:47,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2021-05-21 20:23:47,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1298. [2021-05-21 20:23:47,943 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) [2021-05-21 20:23:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5057 transitions. [2021-05-21 20:23:47,946 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5057 transitions. Word has length 25 [2021-05-21 20:23:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:47,946 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5057 transitions. [2021-05-21 20:23:47,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5057 transitions. [2021-05-21 20:23:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:47,948 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:47,948 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:47,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2021-05-21 20:23:47,948 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]=== [2021-05-21 20:23:47,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:47,948 INFO L82 PathProgramCache]: Analyzing trace with hash -432396993, now seen corresponding path program 424 times [2021-05-21 20:23:47,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:47,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100862459] [2021-05-21 20:23:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:48,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:48,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100862459] [2021-05-21 20:23:48,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100862459] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:48,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:48,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:48,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171871293] [2021-05-21 20:23:48,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:48,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:48,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:48,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:48,031 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) [2021-05-21 20:23:48,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:48,092 INFO L93 Difference]: Finished difference Result 2432 states and 8955 transitions. [2021-05-21 20:23:48,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:48,093 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 [2021-05-21 20:23:48,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:48,097 INFO L225 Difference]: With dead ends: 2432 [2021-05-21 20:23:48,097 INFO L226 Difference]: Without dead ends: 2241 [2021-05-21 20:23:48,097 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 [2021-05-21 20:23:48,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2021-05-21 20:23:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1282. [2021-05-21 20:23:48,126 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) [2021-05-21 20:23:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 5001 transitions. [2021-05-21 20:23:48,129 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 5001 transitions. Word has length 25 [2021-05-21 20:23:48,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:48,129 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 5001 transitions. [2021-05-21 20:23:48,129 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) [2021-05-21 20:23:48,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 5001 transitions. [2021-05-21 20:23:48,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:48,131 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:48,131 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] [2021-05-21 20:23:48,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2021-05-21 20:23:48,131 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]=== [2021-05-21 20:23:48,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:48,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1055027905, now seen corresponding path program 425 times [2021-05-21 20:23:48,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:48,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460691749] [2021-05-21 20:23:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:48,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:48,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460691749] [2021-05-21 20:23:48,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460691749] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:48,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:48,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:48,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614488224] [2021-05-21 20:23:48,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:48,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:48,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:48,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:48,213 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) [2021-05-21 20:23:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:48,275 INFO L93 Difference]: Finished difference Result 2448 states and 9027 transitions. [2021-05-21 20:23:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:48,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:48,280 INFO L225 Difference]: With dead ends: 2448 [2021-05-21 20:23:48,280 INFO L226 Difference]: Without dead ends: 2265 [2021-05-21 20:23:48,280 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 [2021-05-21 20:23:48,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2021-05-21 20:23:48,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1306. [2021-05-21 20:23:48,310 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) [2021-05-21 20:23:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5077 transitions. [2021-05-21 20:23:48,312 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5077 transitions. Word has length 25 [2021-05-21 20:23:48,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:48,312 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5077 transitions. [2021-05-21 20:23:48,312 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) [2021-05-21 20:23:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5077 transitions. [2021-05-21 20:23:48,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:48,314 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:48,314 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:48,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2021-05-21 20:23:48,314 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]=== [2021-05-21 20:23:48,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:48,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1196602397, now seen corresponding path program 426 times [2021-05-21 20:23:48,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:48,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560626937] [2021-05-21 20:23:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:48,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:48,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560626937] [2021-05-21 20:23:48,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560626937] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:48,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:48,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:48,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298163278] [2021-05-21 20:23:48,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:48,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:48,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:48,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:48,397 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) [2021-05-21 20:23:48,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:48,458 INFO L93 Difference]: Finished difference Result 2264 states and 8414 transitions. [2021-05-21 20:23:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:48,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:48,463 INFO L225 Difference]: With dead ends: 2264 [2021-05-21 20:23:48,463 INFO L226 Difference]: Without dead ends: 2057 [2021-05-21 20:23:48,463 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 [2021-05-21 20:23:48,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2021-05-21 20:23:48,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1274. [2021-05-21 20:23:48,491 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) [2021-05-21 20:23:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4977 transitions. [2021-05-21 20:23:48,493 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4977 transitions. Word has length 25 [2021-05-21 20:23:48,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:48,493 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4977 transitions. [2021-05-21 20:23:48,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4977 transitions. [2021-05-21 20:23:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:48,495 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:48,495 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:48,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2021-05-21 20:23:48,495 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]=== [2021-05-21 20:23:48,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:48,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2146968895, now seen corresponding path program 427 times [2021-05-21 20:23:48,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:48,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171283800] [2021-05-21 20:23:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:48,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:48,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171283800] [2021-05-21 20:23:48,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171283800] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:48,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:48,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:48,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130643263] [2021-05-21 20:23:48,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:48,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:48,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:48,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:48,587 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) [2021-05-21 20:23:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:48,649 INFO L93 Difference]: Finished difference Result 2823 states and 10363 transitions. [2021-05-21 20:23:48,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:48,649 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 [2021-05-21 20:23:48,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:48,654 INFO L225 Difference]: With dead ends: 2823 [2021-05-21 20:23:48,654 INFO L226 Difference]: Without dead ends: 2640 [2021-05-21 20:23:48,654 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 [2021-05-21 20:23:48,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-05-21 20:23:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 1318. [2021-05-21 20:23:48,685 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) [2021-05-21 20:23:48,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 5145 transitions. [2021-05-21 20:23:48,688 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 5145 transitions. Word has length 25 [2021-05-21 20:23:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:48,688 INFO L482 AbstractCegarLoop]: Abstraction has 1318 states and 5145 transitions. [2021-05-21 20:23:48,688 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) [2021-05-21 20:23:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 5145 transitions. [2021-05-21 20:23:48,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:48,689 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:48,690 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] [2021-05-21 20:23:48,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2021-05-21 20:23:48,690 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]=== [2021-05-21 20:23:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:48,690 INFO L82 PathProgramCache]: Analyzing trace with hash 103631901, now seen corresponding path program 428 times [2021-05-21 20:23:48,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:48,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458325709] [2021-05-21 20:23:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:48,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:48,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458325709] [2021-05-21 20:23:48,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458325709] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:48,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:48,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:48,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830930282] [2021-05-21 20:23:48,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:48,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:48,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:48,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:48,780 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) [2021-05-21 20:23:48,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:48,845 INFO L93 Difference]: Finished difference Result 2815 states and 10311 transitions. [2021-05-21 20:23:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:48,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:48,850 INFO L225 Difference]: With dead ends: 2815 [2021-05-21 20:23:48,850 INFO L226 Difference]: Without dead ends: 2616 [2021-05-21 20:23:48,850 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 [2021-05-21 20:23:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2021-05-21 20:23:48,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 1294. [2021-05-21 20:23:48,881 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) [2021-05-21 20:23:48,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5057 transitions. [2021-05-21 20:23:48,883 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5057 transitions. Word has length 25 [2021-05-21 20:23:48,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:48,884 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5057 transitions. [2021-05-21 20:23:48,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:48,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5057 transitions. [2021-05-21 20:23:48,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:48,885 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:48,885 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:48,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2021-05-21 20:23:48,885 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]=== [2021-05-21 20:23:48,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:48,886 INFO L82 PathProgramCache]: Analyzing trace with hash 325933469, now seen corresponding path program 429 times [2021-05-21 20:23:48,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:48,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945927320] [2021-05-21 20:23:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:48,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:48,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945927320] [2021-05-21 20:23:48,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945927320] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:48,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:48,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:48,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295180886] [2021-05-21 20:23:48,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:48,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:48,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:48,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:48,992 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) [2021-05-21 20:23:49,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:49,061 INFO L93 Difference]: Finished difference Result 2751 states and 10075 transitions. [2021-05-21 20:23:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:49,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:49,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:49,066 INFO L225 Difference]: With dead ends: 2751 [2021-05-21 20:23:49,066 INFO L226 Difference]: Without dead ends: 2568 [2021-05-21 20:23:49,066 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 [2021-05-21 20:23:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-05-21 20:23:49,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 1338. [2021-05-21 20:23:49,098 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) [2021-05-21 20:23:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5209 transitions. [2021-05-21 20:23:49,100 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5209 transitions. Word has length 25 [2021-05-21 20:23:49,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:49,100 INFO L482 AbstractCegarLoop]: Abstraction has 1338 states and 5209 transitions. [2021-05-21 20:23:49,100 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) [2021-05-21 20:23:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5209 transitions. [2021-05-21 20:23:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:49,102 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:49,102 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] [2021-05-21 20:23:49,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2021-05-21 20:23:49,102 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]=== [2021-05-21 20:23:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:49,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1043501469, now seen corresponding path program 430 times [2021-05-21 20:23:49,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:49,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581228358] [2021-05-21 20:23:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:49,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:49,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581228358] [2021-05-21 20:23:49,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581228358] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:49,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:49,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:49,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634505756] [2021-05-21 20:23:49,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:49,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:49,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:49,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:49,204 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) [2021-05-21 20:23:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:49,254 INFO L93 Difference]: Finished difference Result 2790 states and 10178 transitions. [2021-05-21 20:23:49,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:49,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:49,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:49,259 INFO L225 Difference]: With dead ends: 2790 [2021-05-21 20:23:49,259 INFO L226 Difference]: Without dead ends: 2524 [2021-05-21 20:23:49,259 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 [2021-05-21 20:23:49,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2021-05-21 20:23:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 1294. [2021-05-21 20:23:49,289 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) [2021-05-21 20:23:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5037 transitions. [2021-05-21 20:23:49,292 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5037 transitions. Word has length 25 [2021-05-21 20:23:49,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:49,292 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5037 transitions. [2021-05-21 20:23:49,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:49,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5037 transitions. [2021-05-21 20:23:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:49,293 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:49,293 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] [2021-05-21 20:23:49,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2021-05-21 20:23:49,293 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]=== [2021-05-21 20:23:49,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:49,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1308281083, now seen corresponding path program 431 times [2021-05-21 20:23:49,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:49,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600002729] [2021-05-21 20:23:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:49,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:49,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600002729] [2021-05-21 20:23:49,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600002729] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:49,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:49,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:49,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675400499] [2021-05-21 20:23:49,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:49,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:49,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:49,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:49,395 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) [2021-05-21 20:23:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:49,463 INFO L93 Difference]: Finished difference Result 2691 states and 9819 transitions. [2021-05-21 20:23:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:49,463 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 [2021-05-21 20:23:49,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:49,468 INFO L225 Difference]: With dead ends: 2691 [2021-05-21 20:23:49,468 INFO L226 Difference]: Without dead ends: 2516 [2021-05-21 20:23:49,468 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 [2021-05-21 20:23:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2021-05-21 20:23:49,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1334. [2021-05-21 20:23:49,499 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) [2021-05-21 20:23:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 5177 transitions. [2021-05-21 20:23:49,501 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 5177 transitions. Word has length 25 [2021-05-21 20:23:49,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:49,501 INFO L482 AbstractCegarLoop]: Abstraction has 1334 states and 5177 transitions. [2021-05-21 20:23:49,501 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) [2021-05-21 20:23:49,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 5177 transitions. [2021-05-21 20:23:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:49,503 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:49,503 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:49,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2021-05-21 20:23:49,503 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]=== [2021-05-21 20:23:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:49,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1526632669, now seen corresponding path program 432 times [2021-05-21 20:23:49,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:49,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369102201] [2021-05-21 20:23:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:49,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:49,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369102201] [2021-05-21 20:23:49,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369102201] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:49,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:49,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:49,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128292797] [2021-05-21 20:23:49,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:49,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:49,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:49,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:49,606 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) [2021-05-21 20:23:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:49,664 INFO L93 Difference]: Finished difference Result 2643 states and 9619 transitions. [2021-05-21 20:23:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:49,665 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 [2021-05-21 20:23:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:49,669 INFO L225 Difference]: With dead ends: 2643 [2021-05-21 20:23:49,669 INFO L226 Difference]: Without dead ends: 2353 [2021-05-21 20:23:49,669 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 [2021-05-21 20:23:49,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-05-21 20:23:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1266. [2021-05-21 20:23:49,703 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) [2021-05-21 20:23:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 4953 transitions. [2021-05-21 20:23:49,705 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 4953 transitions. Word has length 25 [2021-05-21 20:23:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:49,706 INFO L482 AbstractCegarLoop]: Abstraction has 1266 states and 4953 transitions. [2021-05-21 20:23:49,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 4953 transitions. [2021-05-21 20:23:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:49,707 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:49,707 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] [2021-05-21 20:23:49,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2021-05-21 20:23:49,707 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]=== [2021-05-21 20:23:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:49,708 INFO L82 PathProgramCache]: Analyzing trace with hash -862211999, now seen corresponding path program 433 times [2021-05-21 20:23:49,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:49,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357339316] [2021-05-21 20:23:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:49,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:49,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357339316] [2021-05-21 20:23:49,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357339316] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:49,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:49,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:49,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730825624] [2021-05-21 20:23:49,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:49,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:49,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:49,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:49,805 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) [2021-05-21 20:23:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:49,863 INFO L93 Difference]: Finished difference Result 2549 states and 9317 transitions. [2021-05-21 20:23:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:49,863 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 [2021-05-21 20:23:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:49,868 INFO L225 Difference]: With dead ends: 2549 [2021-05-21 20:23:49,868 INFO L226 Difference]: Without dead ends: 2390 [2021-05-21 20:23:49,868 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 [2021-05-21 20:23:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-05-21 20:23:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1294. [2021-05-21 20:23:49,898 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) [2021-05-21 20:23:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5057 transitions. [2021-05-21 20:23:49,900 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5057 transitions. Word has length 25 [2021-05-21 20:23:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:49,900 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5057 transitions. [2021-05-21 20:23:49,900 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) [2021-05-21 20:23:49,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5057 transitions. [2021-05-21 20:23:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:49,902 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:49,902 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] [2021-05-21 20:23:49,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2021-05-21 20:23:49,902 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]=== [2021-05-21 20:23:49,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:49,902 INFO L82 PathProgramCache]: Analyzing trace with hash 146085985, now seen corresponding path program 434 times [2021-05-21 20:23:49,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:49,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478619246] [2021-05-21 20:23:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:49,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:49,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478619246] [2021-05-21 20:23:49,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478619246] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:49,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:49,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:49,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469836994] [2021-05-21 20:23:49,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:49,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:49,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:49,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:49,986 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) [2021-05-21 20:23:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:50,053 INFO L93 Difference]: Finished difference Result 2577 states and 9405 transitions. [2021-05-21 20:23:50,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:50,054 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 [2021-05-21 20:23:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:50,058 INFO L225 Difference]: With dead ends: 2577 [2021-05-21 20:23:50,058 INFO L226 Difference]: Without dead ends: 2374 [2021-05-21 20:23:50,058 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 [2021-05-21 20:23:50,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-05-21 20:23:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1278. [2021-05-21 20:23:50,087 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) [2021-05-21 20:23:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 5001 transitions. [2021-05-21 20:23:50,089 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 5001 transitions. Word has length 25 [2021-05-21 20:23:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:50,090 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 5001 transitions. [2021-05-21 20:23:50,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 5001 transitions. [2021-05-21 20:23:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:50,091 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:50,091 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:50,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438 [2021-05-21 20:23:50,091 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]=== [2021-05-21 20:23:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1709008961, now seen corresponding path program 435 times [2021-05-21 20:23:50,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:50,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852445226] [2021-05-21 20:23:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:50,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:50,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852445226] [2021-05-21 20:23:50,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852445226] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:50,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:50,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:50,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645246454] [2021-05-21 20:23:50,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:50,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:50,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:50,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:50,170 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) [2021-05-21 20:23:50,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:50,227 INFO L93 Difference]: Finished difference Result 2545 states and 9297 transitions. [2021-05-21 20:23:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:50,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:50,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:50,232 INFO L225 Difference]: With dead ends: 2545 [2021-05-21 20:23:50,232 INFO L226 Difference]: Without dead ends: 2386 [2021-05-21 20:23:50,232 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 [2021-05-21 20:23:50,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2021-05-21 20:23:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1294. [2021-05-21 20:23:50,261 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) [2021-05-21 20:23:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5049 transitions. [2021-05-21 20:23:50,264 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5049 transitions. Word has length 25 [2021-05-21 20:23:50,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:50,264 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5049 transitions. [2021-05-21 20:23:50,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:50,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5049 transitions. [2021-05-21 20:23:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:50,265 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:50,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:50,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439 [2021-05-21 20:23:50,265 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]=== [2021-05-21 20:23:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:50,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1738868639, now seen corresponding path program 436 times [2021-05-21 20:23:50,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:50,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880386094] [2021-05-21 20:23:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:50,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:50,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880386094] [2021-05-21 20:23:50,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880386094] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:50,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:50,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:50,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429455080] [2021-05-21 20:23:50,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:50,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:50,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:50,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:50,341 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) [2021-05-21 20:23:50,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:50,416 INFO L93 Difference]: Finished difference Result 2569 states and 9373 transitions. [2021-05-21 20:23:50,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:50,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:50,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:50,420 INFO L225 Difference]: With dead ends: 2569 [2021-05-21 20:23:50,420 INFO L226 Difference]: Without dead ends: 2370 [2021-05-21 20:23:50,420 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 [2021-05-21 20:23:50,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2021-05-21 20:23:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 1278. [2021-05-21 20:23:50,450 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) [2021-05-21 20:23:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4993 transitions. [2021-05-21 20:23:50,452 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4993 transitions. Word has length 25 [2021-05-21 20:23:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:50,452 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 4993 transitions. [2021-05-21 20:23:50,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4993 transitions. [2021-05-21 20:23:50,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:50,454 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:50,454 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:50,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440 [2021-05-21 20:23:50,454 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]=== [2021-05-21 20:23:50,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:50,454 INFO L82 PathProgramCache]: Analyzing trace with hash 195653729, now seen corresponding path program 437 times [2021-05-21 20:23:50,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:50,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462950406] [2021-05-21 20:23:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:50,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:50,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462950406] [2021-05-21 20:23:50,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462950406] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:50,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:50,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:50,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111429945] [2021-05-21 20:23:50,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:50,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:50,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:50,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:50,542 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) [2021-05-21 20:23:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:50,607 INFO L93 Difference]: Finished difference Result 2613 states and 9549 transitions. [2021-05-21 20:23:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:50,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:50,611 INFO L225 Difference]: With dead ends: 2613 [2021-05-21 20:23:50,611 INFO L226 Difference]: Without dead ends: 2426 [2021-05-21 20:23:50,612 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 [2021-05-21 20:23:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-05-21 20:23:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1306. [2021-05-21 20:23:50,642 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) [2021-05-21 20:23:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5081 transitions. [2021-05-21 20:23:50,644 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5081 transitions. Word has length 25 [2021-05-21 20:23:50,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:50,644 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5081 transitions. [2021-05-21 20:23:50,644 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) [2021-05-21 20:23:50,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5081 transitions. [2021-05-21 20:23:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:50,646 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:50,646 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] [2021-05-21 20:23:50,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441 [2021-05-21 20:23:50,646 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]=== [2021-05-21 20:23:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:50,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1847683265, now seen corresponding path program 438 times [2021-05-21 20:23:50,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:50,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066014382] [2021-05-21 20:23:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:50,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:50,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066014382] [2021-05-21 20:23:50,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066014382] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:50,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:50,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:50,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961735860] [2021-05-21 20:23:50,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:50,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:50,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:50,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:50,722 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) [2021-05-21 20:23:50,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:50,788 INFO L93 Difference]: Finished difference Result 2609 states and 9509 transitions. [2021-05-21 20:23:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:50,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:50,792 INFO L225 Difference]: With dead ends: 2609 [2021-05-21 20:23:50,792 INFO L226 Difference]: Without dead ends: 2390 [2021-05-21 20:23:50,793 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 [2021-05-21 20:23:50,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-05-21 20:23:50,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1270. [2021-05-21 20:23:50,822 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) [2021-05-21 20:23:50,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4969 transitions. [2021-05-21 20:23:50,824 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4969 transitions. Word has length 25 [2021-05-21 20:23:50,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:50,824 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4969 transitions. [2021-05-21 20:23:50,824 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) [2021-05-21 20:23:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4969 transitions. [2021-05-21 20:23:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:50,826 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:50,826 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:50,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442 [2021-05-21 20:23:50,826 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]=== [2021-05-21 20:23:50,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:50,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1409693759, now seen corresponding path program 439 times [2021-05-21 20:23:50,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:50,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805210997] [2021-05-21 20:23:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:50,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:50,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805210997] [2021-05-21 20:23:50,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805210997] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:50,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:50,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:50,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486858022] [2021-05-21 20:23:50,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:50,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:50,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:50,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:50,911 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) [2021-05-21 20:23:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:50,968 INFO L93 Difference]: Finished difference Result 2513 states and 9169 transitions. [2021-05-21 20:23:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:50,968 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 [2021-05-21 20:23:50,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:50,972 INFO L225 Difference]: With dead ends: 2513 [2021-05-21 20:23:50,972 INFO L226 Difference]: Without dead ends: 2354 [2021-05-21 20:23:50,972 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 [2021-05-21 20:23:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-05-21 20:23:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1294. [2021-05-21 20:23:51,002 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) [2021-05-21 20:23:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5053 transitions. [2021-05-21 20:23:51,004 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5053 transitions. Word has length 25 [2021-05-21 20:23:51,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:51,004 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5053 transitions. [2021-05-21 20:23:51,004 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) [2021-05-21 20:23:51,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5053 transitions. [2021-05-21 20:23:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:51,006 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:51,006 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] [2021-05-21 20:23:51,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable443 [2021-05-21 20:23:51,006 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]=== [2021-05-21 20:23:51,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:51,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1876975553, now seen corresponding path program 440 times [2021-05-21 20:23:51,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:51,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157589441] [2021-05-21 20:23:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:51,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:51,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157589441] [2021-05-21 20:23:51,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157589441] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:51,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:51,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:51,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271039907] [2021-05-21 20:23:51,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:51,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:51,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:51,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:51,095 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) [2021-05-21 20:23:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:51,159 INFO L93 Difference]: Finished difference Result 2541 states and 9257 transitions. [2021-05-21 20:23:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:51,160 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 [2021-05-21 20:23:51,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:51,164 INFO L225 Difference]: With dead ends: 2541 [2021-05-21 20:23:51,164 INFO L226 Difference]: Without dead ends: 2338 [2021-05-21 20:23:51,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:51,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2021-05-21 20:23:51,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1278. [2021-05-21 20:23:51,194 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) [2021-05-21 20:23:51,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4997 transitions. [2021-05-21 20:23:51,196 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4997 transitions. Word has length 25 [2021-05-21 20:23:51,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:51,196 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 4997 transitions. [2021-05-21 20:23:51,196 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) [2021-05-21 20:23:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4997 transitions. [2021-05-21 20:23:51,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:51,198 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:51,198 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:51,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable444 [2021-05-21 20:23:51,198 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]=== [2021-05-21 20:23:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:51,198 INFO L82 PathProgramCache]: Analyzing trace with hash 613666879, now seen corresponding path program 441 times [2021-05-21 20:23:51,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:51,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128139649] [2021-05-21 20:23:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:51,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:51,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128139649] [2021-05-21 20:23:51,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128139649] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:51,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:51,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:51,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191817560] [2021-05-21 20:23:51,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:51,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:51,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:51,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:51,279 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) [2021-05-21 20:23:51,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:51,325 INFO L93 Difference]: Finished difference Result 2469 states and 9009 transitions. [2021-05-21 20:23:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:51,326 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 [2021-05-21 20:23:51,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:51,330 INFO L225 Difference]: With dead ends: 2469 [2021-05-21 20:23:51,330 INFO L226 Difference]: Without dead ends: 2310 [2021-05-21 20:23:51,330 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-05-21 20:23:51,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1294. [2021-05-21 20:23:51,359 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) [2021-05-21 20:23:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5045 transitions. [2021-05-21 20:23:51,361 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5045 transitions. Word has length 25 [2021-05-21 20:23:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:51,361 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5045 transitions. [2021-05-21 20:23:51,361 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) [2021-05-21 20:23:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5045 transitions. [2021-05-21 20:23:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:51,363 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:51,363 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:51,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445 [2021-05-21 20:23:51,363 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]=== [2021-05-21 20:23:51,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:51,363 INFO L82 PathProgramCache]: Analyzing trace with hash -31864735, now seen corresponding path program 442 times [2021-05-21 20:23:51,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:51,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392042526] [2021-05-21 20:23:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:51,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:51,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392042526] [2021-05-21 20:23:51,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392042526] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:51,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:51,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:51,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526665715] [2021-05-21 20:23:51,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:51,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:51,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:51,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:51,456 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) [2021-05-21 20:23:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:51,530 INFO L93 Difference]: Finished difference Result 2357 states and 8672 transitions. [2021-05-21 20:23:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:51,530 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 [2021-05-21 20:23:51,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:51,534 INFO L225 Difference]: With dead ends: 2357 [2021-05-21 20:23:51,534 INFO L226 Difference]: Without dead ends: 2166 [2021-05-21 20:23:51,534 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-05-21 20:23:51,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1278. [2021-05-21 20:23:51,562 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) [2021-05-21 20:23:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4989 transitions. [2021-05-21 20:23:51,564 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4989 transitions. Word has length 25 [2021-05-21 20:23:51,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:51,564 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 4989 transitions. [2021-05-21 20:23:51,564 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) [2021-05-21 20:23:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4989 transitions. [2021-05-21 20:23:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:51,566 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:51,566 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] [2021-05-21 20:23:51,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446 [2021-05-21 20:23:51,566 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]=== [2021-05-21 20:23:51,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:51,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1230458977, now seen corresponding path program 443 times [2021-05-21 20:23:51,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:51,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533375675] [2021-05-21 20:23:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:51,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:51,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533375675] [2021-05-21 20:23:51,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533375675] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:51,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:51,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:51,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505972953] [2021-05-21 20:23:51,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:51,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:51,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:51,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:51,641 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) [2021-05-21 20:23:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:51,699 INFO L93 Difference]: Finished difference Result 2505 states and 9141 transitions. [2021-05-21 20:23:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:51,699 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 [2021-05-21 20:23:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:51,703 INFO L225 Difference]: With dead ends: 2505 [2021-05-21 20:23:51,703 INFO L226 Difference]: Without dead ends: 2318 [2021-05-21 20:23:51,704 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 [2021-05-21 20:23:51,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-05-21 20:23:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1302. [2021-05-21 20:23:51,732 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) [2021-05-21 20:23:51,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 5065 transitions. [2021-05-21 20:23:51,735 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 5065 transitions. Word has length 25 [2021-05-21 20:23:51,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:51,735 INFO L482 AbstractCegarLoop]: Abstraction has 1302 states and 5065 transitions. [2021-05-21 20:23:51,735 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) [2021-05-21 20:23:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 5065 transitions. [2021-05-21 20:23:51,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:51,737 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:51,737 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] [2021-05-21 20:23:51,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447 [2021-05-21 20:23:51,737 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]=== [2021-05-21 20:23:51,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:51,738 INFO L82 PathProgramCache]: Analyzing trace with hash -161685569, now seen corresponding path program 444 times [2021-05-21 20:23:51,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:51,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760446707] [2021-05-21 20:23:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:51,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:51,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760446707] [2021-05-21 20:23:51,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760446707] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:51,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:51,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:51,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477953468] [2021-05-21 20:23:51,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:51,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:51,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:51,827 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) [2021-05-21 20:23:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:51,886 INFO L93 Difference]: Finished difference Result 2365 states and 8692 transitions. [2021-05-21 20:23:51,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:51,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:51,890 INFO L225 Difference]: With dead ends: 2365 [2021-05-21 20:23:51,891 INFO L226 Difference]: Without dead ends: 2158 [2021-05-21 20:23:51,891 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 [2021-05-21 20:23:51,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-05-21 20:23:51,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1270. [2021-05-21 20:23:51,918 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) [2021-05-21 20:23:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4965 transitions. [2021-05-21 20:23:51,921 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4965 transitions. Word has length 25 [2021-05-21 20:23:51,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:51,921 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4965 transitions. [2021-05-21 20:23:51,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:51,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4965 transitions. [2021-05-21 20:23:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:51,922 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:51,922 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:51,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448 [2021-05-21 20:23:51,922 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]=== [2021-05-21 20:23:51,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:51,923 INFO L82 PathProgramCache]: Analyzing trace with hash 552945693, now seen corresponding path program 445 times [2021-05-21 20:23:51,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:51,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814598068] [2021-05-21 20:23:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:52,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:52,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814598068] [2021-05-21 20:23:52,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814598068] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:52,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:52,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:52,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538413207] [2021-05-21 20:23:52,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:52,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:52,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:52,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:52,003 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) [2021-05-21 20:23:52,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:52,049 INFO L93 Difference]: Finished difference Result 2449 states and 8929 transitions. [2021-05-21 20:23:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:52,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:52,054 INFO L225 Difference]: With dead ends: 2449 [2021-05-21 20:23:52,054 INFO L226 Difference]: Without dead ends: 2290 [2021-05-21 20:23:52,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2021-05-21 20:23:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 1294. [2021-05-21 20:23:52,084 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) [2021-05-21 20:23:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5049 transitions. [2021-05-21 20:23:52,086 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5049 transitions. Word has length 25 [2021-05-21 20:23:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:52,086 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5049 transitions. [2021-05-21 20:23:52,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5049 transitions. [2021-05-21 20:23:52,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:52,088 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:52,088 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:52,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449 [2021-05-21 20:23:52,088 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]=== [2021-05-21 20:23:52,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:52,088 INFO L82 PathProgramCache]: Analyzing trace with hash 523086015, now seen corresponding path program 446 times [2021-05-21 20:23:52,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:52,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952095660] [2021-05-21 20:23:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:52,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:52,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952095660] [2021-05-21 20:23:52,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952095660] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:52,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:52,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:52,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754456150] [2021-05-21 20:23:52,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:52,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:52,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:52,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:52,168 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) [2021-05-21 20:23:52,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:52,226 INFO L93 Difference]: Finished difference Result 2473 states and 9005 transitions. [2021-05-21 20:23:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:52,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:52,230 INFO L225 Difference]: With dead ends: 2473 [2021-05-21 20:23:52,230 INFO L226 Difference]: Without dead ends: 2274 [2021-05-21 20:23:52,230 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 [2021-05-21 20:23:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2021-05-21 20:23:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1278. [2021-05-21 20:23:52,259 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) [2021-05-21 20:23:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4993 transitions. [2021-05-21 20:23:52,261 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4993 transitions. Word has length 25 [2021-05-21 20:23:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:52,261 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 4993 transitions. [2021-05-21 20:23:52,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4993 transitions. [2021-05-21 20:23:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:52,263 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:52,263 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:52,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450 [2021-05-21 20:23:52,263 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]=== [2021-05-21 20:23:52,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:52,263 INFO L82 PathProgramCache]: Analyzing trace with hash 72043647, now seen corresponding path program 447 times [2021-05-21 20:23:52,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:52,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906889482] [2021-05-21 20:23:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:52,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:52,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906889482] [2021-05-21 20:23:52,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906889482] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:52,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:52,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:52,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690090691] [2021-05-21 20:23:52,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:52,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:52,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:52,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:52,340 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) [2021-05-21 20:23:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:52,386 INFO L93 Difference]: Finished difference Result 2393 states and 8717 transitions. [2021-05-21 20:23:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:52,386 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 [2021-05-21 20:23:52,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:52,390 INFO L225 Difference]: With dead ends: 2393 [2021-05-21 20:23:52,390 INFO L226 Difference]: Without dead ends: 2234 [2021-05-21 20:23:52,390 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 [2021-05-21 20:23:52,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-05-21 20:23:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1294. [2021-05-21 20:23:52,418 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) [2021-05-21 20:23:52,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5041 transitions. [2021-05-21 20:23:52,421 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5041 transitions. Word has length 25 [2021-05-21 20:23:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:52,421 INFO L482 AbstractCegarLoop]: Abstraction has 1294 states and 5041 transitions. [2021-05-21 20:23:52,421 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) [2021-05-21 20:23:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5041 transitions. [2021-05-21 20:23:52,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:52,422 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:52,422 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] [2021-05-21 20:23:52,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451 [2021-05-21 20:23:52,423 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]=== [2021-05-21 20:23:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:52,423 INFO L82 PathProgramCache]: Analyzing trace with hash -2054926273, now seen corresponding path program 448 times [2021-05-21 20:23:52,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:52,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512182139] [2021-05-21 20:23:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:52,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:52,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512182139] [2021-05-21 20:23:52,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512182139] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:52,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:52,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:52,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346233483] [2021-05-21 20:23:52,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:52,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:52,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:52,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:52,499 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) [2021-05-21 20:23:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:52,563 INFO L93 Difference]: Finished difference Result 2281 states and 8380 transitions. [2021-05-21 20:23:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:52,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:52,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:52,567 INFO L225 Difference]: With dead ends: 2281 [2021-05-21 20:23:52,567 INFO L226 Difference]: Without dead ends: 2090 [2021-05-21 20:23:52,567 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 [2021-05-21 20:23:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-05-21 20:23:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1278. [2021-05-21 20:23:52,597 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) [2021-05-21 20:23:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4985 transitions. [2021-05-21 20:23:52,599 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4985 transitions. Word has length 25 [2021-05-21 20:23:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:52,599 INFO L482 AbstractCegarLoop]: Abstraction has 1278 states and 4985 transitions. [2021-05-21 20:23:52,599 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) [2021-05-21 20:23:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4985 transitions. [2021-05-21 20:23:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:52,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:52,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:52,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable452 [2021-05-21 20:23:52,601 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]=== [2021-05-21 20:23:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:52,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1357504415, now seen corresponding path program 449 times [2021-05-21 20:23:52,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:52,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649194248] [2021-05-21 20:23:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:52,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:52,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649194248] [2021-05-21 20:23:52,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649194248] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:52,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:52,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:52,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600909363] [2021-05-21 20:23:52,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:52,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:52,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:52,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:52,679 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) [2021-05-21 20:23:52,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:52,744 INFO L93 Difference]: Finished difference Result 2297 states and 8452 transitions. [2021-05-21 20:23:52,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:52,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:52,748 INFO L225 Difference]: With dead ends: 2297 [2021-05-21 20:23:52,748 INFO L226 Difference]: Without dead ends: 2114 [2021-05-21 20:23:52,749 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 [2021-05-21 20:23:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2021-05-21 20:23:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 1302. [2021-05-21 20:23:52,777 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) [2021-05-21 20:23:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 5061 transitions. [2021-05-21 20:23:52,779 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 5061 transitions. Word has length 25 [2021-05-21 20:23:52,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:52,779 INFO L482 AbstractCegarLoop]: Abstraction has 1302 states and 5061 transitions. [2021-05-21 20:23:52,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:52,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 5061 transitions. [2021-05-21 20:23:52,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:52,781 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:52,781 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:52,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453 [2021-05-21 20:23:52,781 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]=== [2021-05-21 20:23:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:52,781 INFO L82 PathProgramCache]: Analyzing trace with hash 894125887, now seen corresponding path program 450 times [2021-05-21 20:23:52,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:52,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229530961] [2021-05-21 20:23:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:52,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:52,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229530961] [2021-05-21 20:23:52,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229530961] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:52,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:52,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:52,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245415570] [2021-05-21 20:23:52,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:52,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:52,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:52,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:52,858 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) [2021-05-21 20:23:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:52,915 INFO L93 Difference]: Finished difference Result 2113 states and 7839 transitions. [2021-05-21 20:23:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:52,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:52,918 INFO L225 Difference]: With dead ends: 2113 [2021-05-21 20:23:52,918 INFO L226 Difference]: Without dead ends: 1906 [2021-05-21 20:23:52,918 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 [2021-05-21 20:23:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-05-21 20:23:52,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1270. [2021-05-21 20:23:52,945 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) [2021-05-21 20:23:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4961 transitions. [2021-05-21 20:23:52,947 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4961 transitions. Word has length 25 [2021-05-21 20:23:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:52,947 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4961 transitions. [2021-05-21 20:23:52,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4961 transitions. [2021-05-21 20:23:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:52,948 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:52,949 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:52,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454 [2021-05-21 20:23:52,949 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]=== [2021-05-21 20:23:52,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:52,949 INFO L82 PathProgramCache]: Analyzing trace with hash -117393311, now seen corresponding path program 451 times [2021-05-21 20:23:52,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:52,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123177204] [2021-05-21 20:23:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:53,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:53,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123177204] [2021-05-21 20:23:53,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123177204] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:53,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:53,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:53,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339572778] [2021-05-21 20:23:53,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:53,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:53,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:53,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:53,024 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) [2021-05-21 20:23:53,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:53,081 INFO L93 Difference]: Finished difference Result 2345 states and 8652 transitions. [2021-05-21 20:23:53,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:53,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:53,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:53,085 INFO L225 Difference]: With dead ends: 2345 [2021-05-21 20:23:53,085 INFO L226 Difference]: Without dead ends: 2158 [2021-05-21 20:23:53,085 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 [2021-05-21 20:23:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-05-21 20:23:53,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1310. [2021-05-21 20:23:53,113 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) [2021-05-21 20:23:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 5105 transitions. [2021-05-21 20:23:53,115 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 5105 transitions. Word has length 25 [2021-05-21 20:23:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:53,115 INFO L482 AbstractCegarLoop]: Abstraction has 1310 states and 5105 transitions. [2021-05-21 20:23:53,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:53,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 5105 transitions. [2021-05-21 20:23:53,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:53,117 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:53,117 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] [2021-05-21 20:23:53,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable455 [2021-05-21 20:23:53,117 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]=== [2021-05-21 20:23:53,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:53,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2134236991, now seen corresponding path program 452 times [2021-05-21 20:23:53,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:53,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731598009] [2021-05-21 20:23:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:53,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:53,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:53,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731598009] [2021-05-21 20:23:53,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731598009] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:53,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:53,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:53,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105164360] [2021-05-21 20:23:53,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:53,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:53,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:53,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:53,193 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) [2021-05-21 20:23:53,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:53,249 INFO L93 Difference]: Finished difference Result 2341 states and 8612 transitions. [2021-05-21 20:23:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:53,249 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:53,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:53,253 INFO L225 Difference]: With dead ends: 2341 [2021-05-21 20:23:53,253 INFO L226 Difference]: Without dead ends: 2130 [2021-05-21 20:23:53,253 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 [2021-05-21 20:23:53,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2021-05-21 20:23:53,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1282. [2021-05-21 20:23:53,284 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) [2021-05-21 20:23:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 5005 transitions. [2021-05-21 20:23:53,287 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 5005 transitions. Word has length 25 [2021-05-21 20:23:53,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:53,287 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 5005 transitions. [2021-05-21 20:23:53,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:53,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 5005 transitions. [2021-05-21 20:23:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:53,289 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:53,289 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:53,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456 [2021-05-21 20:23:53,289 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]=== [2021-05-21 20:23:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:53,289 INFO L82 PathProgramCache]: Analyzing trace with hash -964190273, now seen corresponding path program 453 times [2021-05-21 20:23:53,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:53,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437959068] [2021-05-21 20:23:53,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:53,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:53,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437959068] [2021-05-21 20:23:53,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437959068] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:53,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:53,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:53,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743265150] [2021-05-21 20:23:53,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:53,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:53,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:53,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:53,366 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) [2021-05-21 20:23:53,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:53,425 INFO L93 Difference]: Finished difference Result 2257 states and 8308 transitions. [2021-05-21 20:23:53,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:53,425 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 [2021-05-21 20:23:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:53,429 INFO L225 Difference]: With dead ends: 2257 [2021-05-21 20:23:53,429 INFO L226 Difference]: Without dead ends: 2070 [2021-05-21 20:23:53,429 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 [2021-05-21 20:23:53,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-05-21 20:23:53,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1306. [2021-05-21 20:23:53,457 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) [2021-05-21 20:23:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5081 transitions. [2021-05-21 20:23:53,459 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5081 transitions. Word has length 25 [2021-05-21 20:23:53,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:53,459 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5081 transitions. [2021-05-21 20:23:53,459 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) [2021-05-21 20:23:53,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5081 transitions. [2021-05-21 20:23:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:53,461 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:53,461 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] [2021-05-21 20:23:53,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457 [2021-05-21 20:23:53,461 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]=== [2021-05-21 20:23:53,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:53,461 INFO L82 PathProgramCache]: Analyzing trace with hash 228276159, now seen corresponding path program 454 times [2021-05-21 20:23:53,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:53,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917385786] [2021-05-21 20:23:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:53,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:53,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917385786] [2021-05-21 20:23:53,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917385786] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:53,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:53,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:53,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897357249] [2021-05-21 20:23:53,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:53,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:53,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:53,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:53,538 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) [2021-05-21 20:23:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:53,597 INFO L93 Difference]: Finished difference Result 2117 states and 7859 transitions. [2021-05-21 20:23:53,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:53,597 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 [2021-05-21 20:23:53,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:53,601 INFO L225 Difference]: With dead ends: 2117 [2021-05-21 20:23:53,601 INFO L226 Difference]: Without dead ends: 1918 [2021-05-21 20:23:53,601 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 [2021-05-21 20:23:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2021-05-21 20:23:53,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1282. [2021-05-21 20:23:53,627 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) [2021-05-21 20:23:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 4993 transitions. [2021-05-21 20:23:53,629 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 4993 transitions. Word has length 25 [2021-05-21 20:23:53,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:53,630 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 4993 transitions. [2021-05-21 20:23:53,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:53,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 4993 transitions. [2021-05-21 20:23:53,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:53,631 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:53,631 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] [2021-05-21 20:23:53,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable458 [2021-05-21 20:23:53,631 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]=== [2021-05-21 20:23:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:53,632 INFO L82 PathProgramCache]: Analyzing trace with hash 18157341, now seen corresponding path program 455 times [2021-05-21 20:23:53,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:53,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26186376] [2021-05-21 20:23:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:53,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:53,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26186376] [2021-05-21 20:23:53,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26186376] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:53,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:53,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:53,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864788116] [2021-05-21 20:23:53,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:53,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:53,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:53,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:53,721 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) [2021-05-21 20:23:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:53,778 INFO L93 Difference]: Finished difference Result 2045 states and 7595 transitions. [2021-05-21 20:23:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:53,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:53,782 INFO L225 Difference]: With dead ends: 2045 [2021-05-21 20:23:53,782 INFO L226 Difference]: Without dead ends: 1862 [2021-05-21 20:23:53,782 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 [2021-05-21 20:23:53,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2021-05-21 20:23:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1306. [2021-05-21 20:23:53,808 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) [2021-05-21 20:23:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5069 transitions. [2021-05-21 20:23:53,810 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5069 transitions. Word has length 25 [2021-05-21 20:23:53,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:53,810 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5069 transitions. [2021-05-21 20:23:53,811 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) [2021-05-21 20:23:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5069 transitions. [2021-05-21 20:23:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:53,812 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:53,812 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] [2021-05-21 20:23:53,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable459 [2021-05-21 20:23:53,812 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]=== [2021-05-21 20:23:53,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:53,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1099219967, now seen corresponding path program 456 times [2021-05-21 20:23:53,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:53,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635185529] [2021-05-21 20:23:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:53,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:53,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635185529] [2021-05-21 20:23:53,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635185529] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:53,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:53,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:53,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639610121] [2021-05-21 20:23:53,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:53,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:53,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:53,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:53,895 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) [2021-05-21 20:23:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:53,949 INFO L93 Difference]: Finished difference Result 1861 states and 6982 transitions. [2021-05-21 20:23:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:53,950 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 [2021-05-21 20:23:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:53,952 INFO L225 Difference]: With dead ends: 1861 [2021-05-21 20:23:53,953 INFO L226 Difference]: Without dead ends: 1646 [2021-05-21 20:23:53,953 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 [2021-05-21 20:23:53,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2021-05-21 20:23:53,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1266. [2021-05-21 20:23:53,978 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) [2021-05-21 20:23:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 4951 transitions. [2021-05-21 20:23:53,981 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 4951 transitions. Word has length 25 [2021-05-21 20:23:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:53,981 INFO L482 AbstractCegarLoop]: Abstraction has 1266 states and 4951 transitions. [2021-05-21 20:23:53,981 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) [2021-05-21 20:23:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 4951 transitions. [2021-05-21 20:23:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:53,982 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:53,982 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] [2021-05-21 20:23:53,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460 [2021-05-21 20:23:53,982 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]=== [2021-05-21 20:23:53,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:53,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1804947553, now seen corresponding path program 457 times [2021-05-21 20:23:53,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:53,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322634716] [2021-05-21 20:23:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:54,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:54,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322634716] [2021-05-21 20:23:54,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322634716] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:54,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:54,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:54,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747307734] [2021-05-21 20:23:54,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:54,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:54,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:54,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:54,058 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) [2021-05-21 20:23:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:54,119 INFO L93 Difference]: Finished difference Result 2910 states and 10765 transitions. [2021-05-21 20:23:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:54,119 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 [2021-05-21 20:23:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:54,124 INFO L225 Difference]: With dead ends: 2910 [2021-05-21 20:23:54,124 INFO L226 Difference]: Without dead ends: 2723 [2021-05-21 20:23:54,124 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 [2021-05-21 20:23:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-05-21 20:23:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1316. [2021-05-21 20:23:54,156 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) [2021-05-21 20:23:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 5146 transitions. [2021-05-21 20:23:54,158 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 5146 transitions. Word has length 25 [2021-05-21 20:23:54,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:54,158 INFO L482 AbstractCegarLoop]: Abstraction has 1316 states and 5146 transitions. [2021-05-21 20:23:54,158 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) [2021-05-21 20:23:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 5146 transitions. [2021-05-21 20:23:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:54,160 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:54,160 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] [2021-05-21 20:23:54,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461 [2021-05-21 20:23:54,160 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]=== [2021-05-21 20:23:54,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:54,160 INFO L82 PathProgramCache]: Analyzing trace with hash -238389441, now seen corresponding path program 458 times [2021-05-21 20:23:54,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:54,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848665620] [2021-05-21 20:23:54,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:54,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:54,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848665620] [2021-05-21 20:23:54,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848665620] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:54,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:54,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:54,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209489573] [2021-05-21 20:23:54,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:54,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:54,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:54,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:54,237 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) [2021-05-21 20:23:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:54,296 INFO L93 Difference]: Finished difference Result 2906 states and 10725 transitions. [2021-05-21 20:23:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:54,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:54,301 INFO L225 Difference]: With dead ends: 2906 [2021-05-21 20:23:54,301 INFO L226 Difference]: Without dead ends: 2695 [2021-05-21 20:23:54,301 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 [2021-05-21 20:23:54,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-05-21 20:23:54,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 1288. [2021-05-21 20:23:54,333 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) [2021-05-21 20:23:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 5046 transitions. [2021-05-21 20:23:54,335 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 5046 transitions. Word has length 25 [2021-05-21 20:23:54,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:54,335 INFO L482 AbstractCegarLoop]: Abstraction has 1288 states and 5046 transitions. [2021-05-21 20:23:54,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:54,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 5046 transitions. [2021-05-21 20:23:54,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:54,337 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:54,337 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] [2021-05-21 20:23:54,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462 [2021-05-21 20:23:54,337 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]=== [2021-05-21 20:23:54,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:54,337 INFO L82 PathProgramCache]: Analyzing trace with hash 958150591, now seen corresponding path program 459 times [2021-05-21 20:23:54,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:54,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925159918] [2021-05-21 20:23:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:54,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:54,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925159918] [2021-05-21 20:23:54,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925159918] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:54,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:54,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:54,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906399434] [2021-05-21 20:23:54,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:54,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:54,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:54,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:54,411 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) [2021-05-21 20:23:54,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:54,476 INFO L93 Difference]: Finished difference Result 2898 states and 10709 transitions. [2021-05-21 20:23:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:54,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:54,481 INFO L225 Difference]: With dead ends: 2898 [2021-05-21 20:23:54,481 INFO L226 Difference]: Without dead ends: 2711 [2021-05-21 20:23:54,481 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 [2021-05-21 20:23:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2021-05-21 20:23:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 1312. [2021-05-21 20:23:54,513 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) [2021-05-21 20:23:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 5122 transitions. [2021-05-21 20:23:54,516 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 5122 transitions. Word has length 25 [2021-05-21 20:23:54,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:54,516 INFO L482 AbstractCegarLoop]: Abstraction has 1312 states and 5122 transitions. [2021-05-21 20:23:54,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 5122 transitions. [2021-05-21 20:23:54,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:54,518 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:54,518 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:54,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463 [2021-05-21 20:23:54,518 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]=== [2021-05-21 20:23:54,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:54,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2144350273, now seen corresponding path program 460 times [2021-05-21 20:23:54,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:54,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436164563] [2021-05-21 20:23:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:54,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:54,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436164563] [2021-05-21 20:23:54,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436164563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:54,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:54,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:54,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766397557] [2021-05-21 20:23:54,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:54,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:54,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:54,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:54,592 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) [2021-05-21 20:23:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:54,652 INFO L93 Difference]: Finished difference Result 2886 states and 10645 transitions. [2021-05-21 20:23:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:54,652 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 [2021-05-21 20:23:54,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:54,657 INFO L225 Difference]: With dead ends: 2886 [2021-05-21 20:23:54,657 INFO L226 Difference]: Without dead ends: 2687 [2021-05-21 20:23:54,657 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 [2021-05-21 20:23:54,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-05-21 20:23:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1288. [2021-05-21 20:23:54,688 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) [2021-05-21 20:23:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 5034 transitions. [2021-05-21 20:23:54,691 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 5034 transitions. Word has length 25 [2021-05-21 20:23:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:54,691 INFO L482 AbstractCegarLoop]: Abstraction has 1288 states and 5034 transitions. [2021-05-21 20:23:54,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 5034 transitions. [2021-05-21 20:23:54,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:54,693 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:54,693 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:54,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464 [2021-05-21 20:23:54,693 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]=== [2021-05-21 20:23:54,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:54,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1940498205, now seen corresponding path program 461 times [2021-05-21 20:23:54,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:54,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117243273] [2021-05-21 20:23:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:54,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:54,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117243273] [2021-05-21 20:23:54,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117243273] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:54,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:54,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:54,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579544684] [2021-05-21 20:23:54,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:54,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:54,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:54,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:54,787 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) [2021-05-21 20:23:54,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:54,845 INFO L93 Difference]: Finished difference Result 2890 states and 10673 transitions. [2021-05-21 20:23:54,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:54,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:54,850 INFO L225 Difference]: With dead ends: 2890 [2021-05-21 20:23:54,850 INFO L226 Difference]: Without dead ends: 2707 [2021-05-21 20:23:54,850 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 [2021-05-21 20:23:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2021-05-21 20:23:54,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 1312. [2021-05-21 20:23:54,882 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) [2021-05-21 20:23:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 5110 transitions. [2021-05-21 20:23:54,885 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 5110 transitions. Word has length 25 [2021-05-21 20:23:54,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:54,885 INFO L482 AbstractCegarLoop]: Abstraction has 1312 states and 5110 transitions. [2021-05-21 20:23:54,885 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) [2021-05-21 20:23:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 5110 transitions. [2021-05-21 20:23:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:54,887 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:54,887 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] [2021-05-21 20:23:54,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable465 [2021-05-21 20:23:54,887 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]=== [2021-05-21 20:23:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1273406465, now seen corresponding path program 462 times [2021-05-21 20:23:54,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:54,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695415995] [2021-05-21 20:23:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:54,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:54,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695415995] [2021-05-21 20:23:54,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695415995] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:54,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:54,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:54,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255192336] [2021-05-21 20:23:54,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:54,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:54,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:54,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:54,964 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) [2021-05-21 20:23:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:55,024 INFO L93 Difference]: Finished difference Result 2882 states and 10621 transitions. [2021-05-21 20:23:55,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:55,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:55,029 INFO L225 Difference]: With dead ends: 2882 [2021-05-21 20:23:55,029 INFO L226 Difference]: Without dead ends: 2671 [2021-05-21 20:23:55,029 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 [2021-05-21 20:23:55,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2021-05-21 20:23:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 1276. [2021-05-21 20:23:55,060 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) [2021-05-21 20:23:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4996 transitions. [2021-05-21 20:23:55,062 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4996 transitions. Word has length 25 [2021-05-21 20:23:55,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:55,062 INFO L482 AbstractCegarLoop]: Abstraction has 1276 states and 4996 transitions. [2021-05-21 20:23:55,062 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) [2021-05-21 20:23:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4996 transitions. [2021-05-21 20:23:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:55,064 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:55,064 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] [2021-05-21 20:23:55,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable466 [2021-05-21 20:23:55,064 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]=== [2021-05-21 20:23:55,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:55,064 INFO L82 PathProgramCache]: Analyzing trace with hash -158407361, now seen corresponding path program 463 times [2021-05-21 20:23:55,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:55,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296331709] [2021-05-21 20:23:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:55,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:55,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296331709] [2021-05-21 20:23:55,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296331709] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:55,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:55,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:55,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859799979] [2021-05-21 20:23:55,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:55,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:55,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:55,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:55,139 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) [2021-05-21 20:23:55,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:55,203 INFO L93 Difference]: Finished difference Result 2802 states and 10327 transitions. [2021-05-21 20:23:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:55,203 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 [2021-05-21 20:23:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:55,208 INFO L225 Difference]: With dead ends: 2802 [2021-05-21 20:23:55,208 INFO L226 Difference]: Without dead ends: 2615 [2021-05-21 20:23:55,208 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 [2021-05-21 20:23:55,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2021-05-21 20:23:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 1326. [2021-05-21 20:23:55,240 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) [2021-05-21 20:23:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 5185 transitions. [2021-05-21 20:23:55,242 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 5185 transitions. Word has length 25 [2021-05-21 20:23:55,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:55,242 INFO L482 AbstractCegarLoop]: Abstraction has 1326 states and 5185 transitions. [2021-05-21 20:23:55,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:55,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 5185 transitions. [2021-05-21 20:23:55,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:55,244 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:55,244 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:55,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467 [2021-05-21 20:23:55,244 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]=== [2021-05-21 20:23:55,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:55,244 INFO L82 PathProgramCache]: Analyzing trace with hash 2093222941, now seen corresponding path program 464 times [2021-05-21 20:23:55,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:55,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440228068] [2021-05-21 20:23:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:55,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:55,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440228068] [2021-05-21 20:23:55,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440228068] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:55,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:55,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:55,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311089811] [2021-05-21 20:23:55,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:55,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:55,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:55,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:55,320 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) [2021-05-21 20:23:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:55,379 INFO L93 Difference]: Finished difference Result 2798 states and 10287 transitions. [2021-05-21 20:23:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:55,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:55,383 INFO L225 Difference]: With dead ends: 2798 [2021-05-21 20:23:55,384 INFO L226 Difference]: Without dead ends: 2587 [2021-05-21 20:23:55,384 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 [2021-05-21 20:23:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2021-05-21 20:23:55,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 1298. [2021-05-21 20:23:55,414 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) [2021-05-21 20:23:55,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5083 transitions. [2021-05-21 20:23:55,416 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5083 transitions. Word has length 25 [2021-05-21 20:23:55,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:55,417 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5083 transitions. [2021-05-21 20:23:55,417 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5083 transitions. [2021-05-21 20:23:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:55,418 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:55,418 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] [2021-05-21 20:23:55,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable468 [2021-05-21 20:23:55,418 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]=== [2021-05-21 20:23:55,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:55,419 INFO L82 PathProgramCache]: Analyzing trace with hash -2065294017, now seen corresponding path program 465 times [2021-05-21 20:23:55,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:55,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342389446] [2021-05-21 20:23:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:55,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:55,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:55,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342389446] [2021-05-21 20:23:55,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342389446] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:55,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:55,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:55,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147177891] [2021-05-21 20:23:55,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:55,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:55,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:55,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:55,495 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) [2021-05-21 20:23:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:55,555 INFO L93 Difference]: Finished difference Result 2859 states and 10515 transitions. [2021-05-21 20:23:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:55,555 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 [2021-05-21 20:23:55,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:55,560 INFO L225 Difference]: With dead ends: 2859 [2021-05-21 20:23:55,560 INFO L226 Difference]: Without dead ends: 2672 [2021-05-21 20:23:55,560 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 [2021-05-21 20:23:55,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-05-21 20:23:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1344. [2021-05-21 20:23:55,592 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) [2021-05-21 20:23:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 5240 transitions. [2021-05-21 20:23:55,594 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 5240 transitions. Word has length 25 [2021-05-21 20:23:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:55,594 INFO L482 AbstractCegarLoop]: Abstraction has 1344 states and 5240 transitions. [2021-05-21 20:23:55,594 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) [2021-05-21 20:23:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 5240 transitions. [2021-05-21 20:23:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:55,596 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:55,596 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:55,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable469 [2021-05-21 20:23:55,596 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]=== [2021-05-21 20:23:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:55,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1984404161, now seen corresponding path program 466 times [2021-05-21 20:23:55,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:55,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695908775] [2021-05-21 20:23:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:55,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:55,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695908775] [2021-05-21 20:23:55,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695908775] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:55,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:55,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:55,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889160979] [2021-05-21 20:23:55,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:55,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:55,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:55,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:55,684 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) [2021-05-21 20:23:55,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:55,748 INFO L93 Difference]: Finished difference Result 2894 states and 10604 transitions. [2021-05-21 20:23:55,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:55,748 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 [2021-05-21 20:23:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:55,753 INFO L225 Difference]: With dead ends: 2894 [2021-05-21 20:23:55,753 INFO L226 Difference]: Without dead ends: 2626 [2021-05-21 20:23:55,753 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 [2021-05-21 20:23:55,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-05-21 20:23:55,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1298. [2021-05-21 20:23:55,784 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) [2021-05-21 20:23:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5061 transitions. [2021-05-21 20:23:55,786 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5061 transitions. Word has length 25 [2021-05-21 20:23:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:55,786 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5061 transitions. [2021-05-21 20:23:55,786 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) [2021-05-21 20:23:55,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5061 transitions. [2021-05-21 20:23:55,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:55,788 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:55,788 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:55,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470 [2021-05-21 20:23:55,788 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]=== [2021-05-21 20:23:55,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:55,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1082946403, now seen corresponding path program 467 times [2021-05-21 20:23:55,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:55,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616045351] [2021-05-21 20:23:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:55,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:55,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616045351] [2021-05-21 20:23:55,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616045351] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:55,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:55,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:55,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892047828] [2021-05-21 20:23:55,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:55,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:55,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:55,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:55,874 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) [2021-05-21 20:23:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:55,930 INFO L93 Difference]: Finished difference Result 2849 states and 10462 transitions. [2021-05-21 20:23:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:55,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:55,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:55,935 INFO L225 Difference]: With dead ends: 2849 [2021-05-21 20:23:55,935 INFO L226 Difference]: Without dead ends: 2666 [2021-05-21 20:23:55,935 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 [2021-05-21 20:23:55,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2021-05-21 20:23:55,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 1342. [2021-05-21 20:23:55,966 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) [2021-05-21 20:23:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 5213 transitions. [2021-05-21 20:23:55,969 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 5213 transitions. Word has length 25 [2021-05-21 20:23:55,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:55,969 INFO L482 AbstractCegarLoop]: Abstraction has 1342 states and 5213 transitions. [2021-05-21 20:23:55,969 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) [2021-05-21 20:23:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 5213 transitions. [2021-05-21 20:23:55,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:55,971 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:55,971 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] [2021-05-21 20:23:55,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471 [2021-05-21 20:23:55,971 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]=== [2021-05-21 20:23:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:55,971 INFO L82 PathProgramCache]: Analyzing trace with hash 2142501887, now seen corresponding path program 468 times [2021-05-21 20:23:55,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:55,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335258334] [2021-05-21 20:23:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:56,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:56,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335258334] [2021-05-21 20:23:56,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335258334] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:56,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:56,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:56,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230490615] [2021-05-21 20:23:56,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:56,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:56,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:56,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:56,068 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) [2021-05-21 20:23:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:56,116 INFO L93 Difference]: Finished difference Result 2888 states and 10565 transitions. [2021-05-21 20:23:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:56,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:56,121 INFO L225 Difference]: With dead ends: 2888 [2021-05-21 20:23:56,121 INFO L226 Difference]: Without dead ends: 2600 [2021-05-21 20:23:56,121 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 [2021-05-21 20:23:56,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-05-21 20:23:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1276. [2021-05-21 20:23:56,151 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) [2021-05-21 20:23:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4986 transitions. [2021-05-21 20:23:56,154 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4986 transitions. Word has length 25 [2021-05-21 20:23:56,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:56,154 INFO L482 AbstractCegarLoop]: Abstraction has 1276 states and 4986 transitions. [2021-05-21 20:23:56,154 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) [2021-05-21 20:23:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4986 transitions. [2021-05-21 20:23:56,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:56,155 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:56,155 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] [2021-05-21 20:23:56,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472 [2021-05-21 20:23:56,155 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]=== [2021-05-21 20:23:56,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:56,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1015155427, now seen corresponding path program 469 times [2021-05-21 20:23:56,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:56,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163022468] [2021-05-21 20:23:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:56,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:56,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163022468] [2021-05-21 20:23:56,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163022468] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:56,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:56,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:56,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702488780] [2021-05-21 20:23:56,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:56,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:56,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:56,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:56,256 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) [2021-05-21 20:23:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:56,315 INFO L93 Difference]: Finished difference Result 2756 states and 10128 transitions. [2021-05-21 20:23:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:56,315 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 [2021-05-21 20:23:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:56,320 INFO L225 Difference]: With dead ends: 2756 [2021-05-21 20:23:56,320 INFO L226 Difference]: Without dead ends: 2569 [2021-05-21 20:23:56,320 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 [2021-05-21 20:23:56,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2021-05-21 20:23:56,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1320. [2021-05-21 20:23:56,351 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) [2021-05-21 20:23:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 5154 transitions. [2021-05-21 20:23:56,353 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 5154 transitions. Word has length 25 [2021-05-21 20:23:56,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:56,353 INFO L482 AbstractCegarLoop]: Abstraction has 1320 states and 5154 transitions. [2021-05-21 20:23:56,354 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) [2021-05-21 20:23:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 5154 transitions. [2021-05-21 20:23:56,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:56,355 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:56,355 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:56,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473 [2021-05-21 20:23:56,355 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]=== [2021-05-21 20:23:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:56,355 INFO L82 PathProgramCache]: Analyzing trace with hash 177311005, now seen corresponding path program 470 times [2021-05-21 20:23:56,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:56,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635858404] [2021-05-21 20:23:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:56,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:56,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635858404] [2021-05-21 20:23:56,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635858404] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:56,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:56,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:56,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553937468] [2021-05-21 20:23:56,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:56,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:56,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:56,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:56,430 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) [2021-05-21 20:23:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:56,489 INFO L93 Difference]: Finished difference Result 2744 states and 10064 transitions. [2021-05-21 20:23:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:56,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:56,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:56,494 INFO L225 Difference]: With dead ends: 2744 [2021-05-21 20:23:56,494 INFO L226 Difference]: Without dead ends: 2545 [2021-05-21 20:23:56,494 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 [2021-05-21 20:23:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2021-05-21 20:23:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1296. [2021-05-21 20:23:56,524 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) [2021-05-21 20:23:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5066 transitions. [2021-05-21 20:23:56,527 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5066 transitions. Word has length 25 [2021-05-21 20:23:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:56,527 INFO L482 AbstractCegarLoop]: Abstraction has 1296 states and 5066 transitions. [2021-05-21 20:23:56,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5066 transitions. [2021-05-21 20:23:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:56,528 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:56,528 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] [2021-05-21 20:23:56,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474 [2021-05-21 20:23:56,528 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]=== [2021-05-21 20:23:56,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:56,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1632678785, now seen corresponding path program 471 times [2021-05-21 20:23:56,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:56,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135709963] [2021-05-21 20:23:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:56,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:56,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:56,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135709963] [2021-05-21 20:23:56,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135709963] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:56,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:56,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:56,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86997146] [2021-05-21 20:23:56,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:56,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:56,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:56,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:56,603 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) [2021-05-21 20:23:56,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:56,661 INFO L93 Difference]: Finished difference Result 2779 states and 10175 transitions. [2021-05-21 20:23:56,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:56,662 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 [2021-05-21 20:23:56,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:56,666 INFO L225 Difference]: With dead ends: 2779 [2021-05-21 20:23:56,667 INFO L226 Difference]: Without dead ends: 2592 [2021-05-21 20:23:56,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:56,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2021-05-21 20:23:56,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 1342. [2021-05-21 20:23:56,698 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) [2021-05-21 20:23:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 5223 transitions. [2021-05-21 20:23:56,700 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 5223 transitions. Word has length 25 [2021-05-21 20:23:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:56,700 INFO L482 AbstractCegarLoop]: Abstraction has 1342 states and 5223 transitions. [2021-05-21 20:23:56,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 5223 transitions. [2021-05-21 20:23:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:56,702 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:56,702 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:56,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable475 [2021-05-21 20:23:56,702 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]=== [2021-05-21 20:23:56,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:56,702 INFO L82 PathProgramCache]: Analyzing trace with hash 287501597, now seen corresponding path program 472 times [2021-05-21 20:23:56,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:56,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189147616] [2021-05-21 20:23:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:56,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:56,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189147616] [2021-05-21 20:23:56,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189147616] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:56,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:56,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:56,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894650708] [2021-05-21 20:23:56,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:56,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:56,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:56,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:56,778 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) [2021-05-21 20:23:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:56,826 INFO L93 Difference]: Finished difference Result 2814 states and 10264 transitions. [2021-05-21 20:23:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:56,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:56,831 INFO L225 Difference]: With dead ends: 2814 [2021-05-21 20:23:56,831 INFO L226 Difference]: Without dead ends: 2546 [2021-05-21 20:23:56,831 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-05-21 20:23:56,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1296. [2021-05-21 20:23:56,862 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) [2021-05-21 20:23:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5046 transitions. [2021-05-21 20:23:56,864 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5046 transitions. Word has length 25 [2021-05-21 20:23:56,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:56,864 INFO L482 AbstractCegarLoop]: Abstraction has 1296 states and 5046 transitions. [2021-05-21 20:23:56,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:56,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5046 transitions. [2021-05-21 20:23:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:56,866 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:56,866 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] [2021-05-21 20:23:56,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable476 [2021-05-21 20:23:56,866 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]=== [2021-05-21 20:23:56,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:56,866 INFO L82 PathProgramCache]: Analyzing trace with hash 603051293, now seen corresponding path program 473 times [2021-05-21 20:23:56,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:56,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211955239] [2021-05-21 20:23:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:56,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:56,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211955239] [2021-05-21 20:23:56,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211955239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:56,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:56,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:56,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939130568] [2021-05-21 20:23:56,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:56,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:56,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:56,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:56,953 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) [2021-05-21 20:23:57,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:57,012 INFO L93 Difference]: Finished difference Result 2749 states and 10052 transitions. [2021-05-21 20:23:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:57,012 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 [2021-05-21 20:23:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:57,017 INFO L225 Difference]: With dead ends: 2749 [2021-05-21 20:23:57,017 INFO L226 Difference]: Without dead ends: 2574 [2021-05-21 20:23:57,017 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 [2021-05-21 20:23:57,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2021-05-21 20:23:57,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1336. [2021-05-21 20:23:57,048 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) [2021-05-21 20:23:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 5186 transitions. [2021-05-21 20:23:57,050 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 5186 transitions. Word has length 25 [2021-05-21 20:23:57,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:57,050 INFO L482 AbstractCegarLoop]: Abstraction has 1336 states and 5186 transitions. [2021-05-21 20:23:57,050 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) [2021-05-21 20:23:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 5186 transitions. [2021-05-21 20:23:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:57,052 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:57,052 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] [2021-05-21 20:23:57,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable477 [2021-05-21 20:23:57,052 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]=== [2021-05-21 20:23:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:57,052 INFO L82 PathProgramCache]: Analyzing trace with hash 821402879, now seen corresponding path program 474 times [2021-05-21 20:23:57,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:57,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75062829] [2021-05-21 20:23:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:57,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:57,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75062829] [2021-05-21 20:23:57,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75062829] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:57,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:57,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:57,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436212325] [2021-05-21 20:23:57,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:57,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:57,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:57,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:57,138 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) [2021-05-21 20:23:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:57,187 INFO L93 Difference]: Finished difference Result 2701 states and 9852 transitions. [2021-05-21 20:23:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:57,187 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 [2021-05-21 20:23:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:57,191 INFO L225 Difference]: With dead ends: 2701 [2021-05-21 20:23:57,191 INFO L226 Difference]: Without dead ends: 2419 [2021-05-21 20:23:57,192 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 [2021-05-21 20:23:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2021-05-21 20:23:57,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 1276. [2021-05-21 20:23:57,221 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) [2021-05-21 20:23:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4976 transitions. [2021-05-21 20:23:57,223 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4976 transitions. Word has length 25 [2021-05-21 20:23:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:57,223 INFO L482 AbstractCegarLoop]: Abstraction has 1276 states and 4976 transitions. [2021-05-21 20:23:57,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4976 transitions. [2021-05-21 20:23:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:57,225 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:57,225 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] [2021-05-21 20:23:57,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478 [2021-05-21 20:23:57,225 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]=== [2021-05-21 20:23:57,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:57,225 INFO L82 PathProgramCache]: Analyzing trace with hash -42758917, now seen corresponding path program 475 times [2021-05-21 20:23:57,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:57,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463860825] [2021-05-21 20:23:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:57,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:57,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463860825] [2021-05-21 20:23:57,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463860825] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:57,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:57,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:57,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981199096] [2021-05-21 20:23:57,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:57,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:57,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:57,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:57,309 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) [2021-05-21 20:23:57,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:57,366 INFO L93 Difference]: Finished difference Result 2678 states and 9803 transitions. [2021-05-21 20:23:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:57,366 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 [2021-05-21 20:23:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:57,371 INFO L225 Difference]: With dead ends: 2678 [2021-05-21 20:23:57,371 INFO L226 Difference]: Without dead ends: 2495 [2021-05-21 20:23:57,371 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 [2021-05-21 20:23:57,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2021-05-21 20:23:57,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1320. [2021-05-21 20:23:57,402 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) [2021-05-21 20:23:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 5144 transitions. [2021-05-21 20:23:57,404 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 5144 transitions. Word has length 25 [2021-05-21 20:23:57,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:57,404 INFO L482 AbstractCegarLoop]: Abstraction has 1320 states and 5144 transitions. [2021-05-21 20:23:57,404 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) [2021-05-21 20:23:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 5144 transitions. [2021-05-21 20:23:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:57,406 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:57,406 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] [2021-05-21 20:23:57,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479 [2021-05-21 20:23:57,406 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]=== [2021-05-21 20:23:57,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:57,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1038303709, now seen corresponding path program 476 times [2021-05-21 20:23:57,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:57,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900236400] [2021-05-21 20:23:57,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:57,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:57,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900236400] [2021-05-21 20:23:57,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900236400] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:57,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:57,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:57,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497115319] [2021-05-21 20:23:57,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:57,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:57,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:57,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:57,492 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) [2021-05-21 20:23:57,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:57,551 INFO L93 Difference]: Finished difference Result 2670 states and 9751 transitions. [2021-05-21 20:23:57,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:57,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:57,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:57,556 INFO L225 Difference]: With dead ends: 2670 [2021-05-21 20:23:57,556 INFO L226 Difference]: Without dead ends: 2471 [2021-05-21 20:23:57,556 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 [2021-05-21 20:23:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-05-21 20:23:57,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 1296. [2021-05-21 20:23:57,597 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) [2021-05-21 20:23:57,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5056 transitions. [2021-05-21 20:23:57,599 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5056 transitions. Word has length 25 [2021-05-21 20:23:57,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:57,599 INFO L482 AbstractCegarLoop]: Abstraction has 1296 states and 5056 transitions. [2021-05-21 20:23:57,599 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) [2021-05-21 20:23:57,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5056 transitions. [2021-05-21 20:23:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:57,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:57,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:57,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480 [2021-05-21 20:23:57,601 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]=== [2021-05-21 20:23:57,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:57,601 INFO L82 PathProgramCache]: Analyzing trace with hash -660282275, now seen corresponding path program 477 times [2021-05-21 20:23:57,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:57,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64612412] [2021-05-21 20:23:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:57,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:57,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64612412] [2021-05-21 20:23:57,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64612412] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:57,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:57,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:57,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8349704] [2021-05-21 20:23:57,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:57,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:57,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:57,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:57,697 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) [2021-05-21 20:23:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:57,753 INFO L93 Difference]: Finished difference Result 2606 states and 9515 transitions. [2021-05-21 20:23:57,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:57,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:57,758 INFO L225 Difference]: With dead ends: 2606 [2021-05-21 20:23:57,758 INFO L226 Difference]: Without dead ends: 2423 [2021-05-21 20:23:57,758 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 [2021-05-21 20:23:57,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2021-05-21 20:23:57,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 1340. [2021-05-21 20:23:57,788 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) [2021-05-21 20:23:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 5208 transitions. [2021-05-21 20:23:57,790 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 5208 transitions. Word has length 25 [2021-05-21 20:23:57,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:57,790 INFO L482 AbstractCegarLoop]: Abstraction has 1340 states and 5208 transitions. [2021-05-21 20:23:57,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:57,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 5208 transitions. [2021-05-21 20:23:57,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:57,792 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:57,792 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] [2021-05-21 20:23:57,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481 [2021-05-21 20:23:57,792 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]=== [2021-05-21 20:23:57,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:57,792 INFO L82 PathProgramCache]: Analyzing trace with hash 109489245, now seen corresponding path program 478 times [2021-05-21 20:23:57,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:57,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165102618] [2021-05-21 20:23:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:57,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:57,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165102618] [2021-05-21 20:23:57,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165102618] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:57,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:57,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:57,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217829078] [2021-05-21 20:23:57,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:57,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:57,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:57,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:57,886 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) [2021-05-21 20:23:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:57,934 INFO L93 Difference]: Finished difference Result 2645 states and 9618 transitions. [2021-05-21 20:23:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:57,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:57,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:57,938 INFO L225 Difference]: With dead ends: 2645 [2021-05-21 20:23:57,938 INFO L226 Difference]: Without dead ends: 2379 [2021-05-21 20:23:57,939 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 [2021-05-21 20:23:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2021-05-21 20:23:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 1296. [2021-05-21 20:23:57,967 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) [2021-05-21 20:23:57,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5036 transitions. [2021-05-21 20:23:57,970 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5036 transitions. Word has length 25 [2021-05-21 20:23:57,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:57,970 INFO L482 AbstractCegarLoop]: Abstraction has 1296 states and 5036 transitions. [2021-05-21 20:23:57,970 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) [2021-05-21 20:23:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5036 transitions. [2021-05-21 20:23:57,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:57,971 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:57,971 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] [2021-05-21 20:23:57,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482 [2021-05-21 20:23:57,972 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]=== [2021-05-21 20:23:57,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:57,972 INFO L82 PathProgramCache]: Analyzing trace with hash -272277313, now seen corresponding path program 479 times [2021-05-21 20:23:57,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:57,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188844047] [2021-05-21 20:23:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:58,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:58,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188844047] [2021-05-21 20:23:58,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188844047] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:58,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:58,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:58,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888107344] [2021-05-21 20:23:58,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:58,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:58,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:58,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:58,075 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) [2021-05-21 20:23:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:58,138 INFO L93 Difference]: Finished difference Result 2546 states and 9259 transitions. [2021-05-21 20:23:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:58,138 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 [2021-05-21 20:23:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:58,142 INFO L225 Difference]: With dead ends: 2546 [2021-05-21 20:23:58,143 INFO L226 Difference]: Without dead ends: 2371 [2021-05-21 20:23:58,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:58,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2021-05-21 20:23:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1336. [2021-05-21 20:23:58,172 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) [2021-05-21 20:23:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 5176 transitions. [2021-05-21 20:23:58,175 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 5176 transitions. Word has length 25 [2021-05-21 20:23:58,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:58,175 INFO L482 AbstractCegarLoop]: Abstraction has 1336 states and 5176 transitions. [2021-05-21 20:23:58,175 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) [2021-05-21 20:23:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 5176 transitions. [2021-05-21 20:23:58,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:58,176 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:58,176 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:58,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483 [2021-05-21 20:23:58,177 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]=== [2021-05-21 20:23:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:58,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2093312739, now seen corresponding path program 480 times [2021-05-21 20:23:58,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:58,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844889147] [2021-05-21 20:23:58,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:58,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:58,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844889147] [2021-05-21 20:23:58,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844889147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:58,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:58,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:58,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637892568] [2021-05-21 20:23:58,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:58,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:58,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:58,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:58,273 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) [2021-05-21 20:23:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:58,322 INFO L93 Difference]: Finished difference Result 2498 states and 9059 transitions. [2021-05-21 20:23:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:58,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:58,327 INFO L225 Difference]: With dead ends: 2498 [2021-05-21 20:23:58,327 INFO L226 Difference]: Without dead ends: 2202 [2021-05-21 20:23:58,327 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 [2021-05-21 20:23:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2021-05-21 20:23:58,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1262. [2021-05-21 20:23:58,355 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) [2021-05-21 20:23:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4941 transitions. [2021-05-21 20:23:58,357 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4941 transitions. Word has length 25 [2021-05-21 20:23:58,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:58,357 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4941 transitions. [2021-05-21 20:23:58,357 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) [2021-05-21 20:23:58,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4941 transitions. [2021-05-21 20:23:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:58,359 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:58,359 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] [2021-05-21 20:23:58,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484 [2021-05-21 20:23:58,359 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]=== [2021-05-21 20:23:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:58,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1302479273, now seen corresponding path program 481 times [2021-05-21 20:23:58,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:58,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530701776] [2021-05-21 20:23:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:58,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:58,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530701776] [2021-05-21 20:23:58,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530701776] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:58,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:58,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:58,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506239310] [2021-05-21 20:23:58,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:58,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:58,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:58,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:58,475 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) [2021-05-21 20:23:58,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:58,533 INFO L93 Difference]: Finished difference Result 2545 states and 9271 transitions. [2021-05-21 20:23:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:58,533 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 [2021-05-21 20:23:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:58,537 INFO L225 Difference]: With dead ends: 2545 [2021-05-21 20:23:58,537 INFO L226 Difference]: Without dead ends: 2386 [2021-05-21 20:23:58,538 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 [2021-05-21 20:23:58,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2021-05-21 20:23:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1286. [2021-05-21 20:23:58,567 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) [2021-05-21 20:23:58,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5025 transitions. [2021-05-21 20:23:58,570 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5025 transitions. Word has length 25 [2021-05-21 20:23:58,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:58,570 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5025 transitions. [2021-05-21 20:23:58,570 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) [2021-05-21 20:23:58,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5025 transitions. [2021-05-21 20:23:58,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:58,571 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:58,571 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] [2021-05-21 20:23:58,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable485 [2021-05-21 20:23:58,571 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]=== [2021-05-21 20:23:58,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:58,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1402553273, now seen corresponding path program 482 times [2021-05-21 20:23:58,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:58,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970317604] [2021-05-21 20:23:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:58,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:58,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970317604] [2021-05-21 20:23:58,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970317604] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:58,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:58,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:58,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082871595] [2021-05-21 20:23:58,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:58,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:58,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:58,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:58,661 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) [2021-05-21 20:23:58,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:58,728 INFO L93 Difference]: Finished difference Result 2575 states and 9364 transitions. [2021-05-21 20:23:58,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:58,728 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 [2021-05-21 20:23:58,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:58,732 INFO L225 Difference]: With dead ends: 2575 [2021-05-21 20:23:58,732 INFO L226 Difference]: Without dead ends: 2370 [2021-05-21 20:23:58,732 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2021-05-21 20:23:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 1270. [2021-05-21 20:23:58,761 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) [2021-05-21 20:23:58,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4969 transitions. [2021-05-21 20:23:58,763 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4969 transitions. Word has length 25 [2021-05-21 20:23:58,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:58,763 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4969 transitions. [2021-05-21 20:23:58,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4969 transitions. [2021-05-21 20:23:58,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:58,765 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:58,765 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] [2021-05-21 20:23:58,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable486 [2021-05-21 20:23:58,765 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]=== [2021-05-21 20:23:58,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:58,765 INFO L82 PathProgramCache]: Analyzing trace with hash -221416647, now seen corresponding path program 483 times [2021-05-21 20:23:58,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:58,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717938245] [2021-05-21 20:23:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:58,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:58,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717938245] [2021-05-21 20:23:58,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717938245] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:58,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:58,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:58,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89074897] [2021-05-21 20:23:58,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:58,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:58,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:58,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:58,861 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) [2021-05-21 20:23:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:58,913 INFO L93 Difference]: Finished difference Result 2543 states and 9258 transitions. [2021-05-21 20:23:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:58,913 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 [2021-05-21 20:23:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:58,917 INFO L225 Difference]: With dead ends: 2543 [2021-05-21 20:23:58,917 INFO L226 Difference]: Without dead ends: 2384 [2021-05-21 20:23:58,918 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 [2021-05-21 20:23:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2021-05-21 20:23:58,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 1286. [2021-05-21 20:23:58,947 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) [2021-05-21 20:23:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5017 transitions. [2021-05-21 20:23:58,949 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5017 transitions. Word has length 25 [2021-05-21 20:23:58,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:58,949 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5017 transitions. [2021-05-21 20:23:58,949 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) [2021-05-21 20:23:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5017 transitions. [2021-05-21 20:23:58,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:58,951 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:58,951 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] [2021-05-21 20:23:58,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487 [2021-05-21 20:23:58,951 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]=== [2021-05-21 20:23:58,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:58,951 INFO L82 PathProgramCache]: Analyzing trace with hash 786881337, now seen corresponding path program 484 times [2021-05-21 20:23:58,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:58,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943405586] [2021-05-21 20:23:58,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:59,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:59,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943405586] [2021-05-21 20:23:59,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943405586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:59,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:59,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:59,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567898932] [2021-05-21 20:23:59,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:59,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:59,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:59,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:59,045 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) [2021-05-21 20:23:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:59,117 INFO L93 Difference]: Finished difference Result 2571 states and 9346 transitions. [2021-05-21 20:23:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:59,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:23:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:59,121 INFO L225 Difference]: With dead ends: 2571 [2021-05-21 20:23:59,122 INFO L226 Difference]: Without dead ends: 2368 [2021-05-21 20:23:59,122 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 [2021-05-21 20:23:59,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2021-05-21 20:23:59,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 1270. [2021-05-21 20:23:59,151 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) [2021-05-21 20:23:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4961 transitions. [2021-05-21 20:23:59,153 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4961 transitions. Word has length 25 [2021-05-21 20:23:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:59,153 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4961 transitions. [2021-05-21 20:23:59,153 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) [2021-05-21 20:23:59,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4961 transitions. [2021-05-21 20:23:59,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:59,155 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:59,155 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] [2021-05-21 20:23:59,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable488 [2021-05-21 20:23:59,155 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]=== [2021-05-21 20:23:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:59,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1195745307, now seen corresponding path program 485 times [2021-05-21 20:23:59,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:59,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282411942] [2021-05-21 20:23:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:59,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:59,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282411942] [2021-05-21 20:23:59,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282411942] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:59,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:59,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:59,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180560371] [2021-05-21 20:23:59,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:59,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:59,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:59,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:59,238 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) [2021-05-21 20:23:59,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:59,307 INFO L93 Difference]: Finished difference Result 2617 states and 9527 transitions. [2021-05-21 20:23:59,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:59,307 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 [2021-05-21 20:23:59,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:59,311 INFO L225 Difference]: With dead ends: 2617 [2021-05-21 20:23:59,311 INFO L226 Difference]: Without dead ends: 2428 [2021-05-21 20:23:59,312 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 [2021-05-21 20:23:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2021-05-21 20:23:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1300. [2021-05-21 20:23:59,341 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) [2021-05-21 20:23:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 5054 transitions. [2021-05-21 20:23:59,344 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 5054 transitions. Word has length 25 [2021-05-21 20:23:59,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:59,344 INFO L482 AbstractCegarLoop]: Abstraction has 1300 states and 5054 transitions. [2021-05-21 20:23:59,344 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) [2021-05-21 20:23:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 5054 transitions. [2021-05-21 20:23:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:59,345 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:59,345 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] [2021-05-21 20:23:59,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489 [2021-05-21 20:23:59,346 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]=== [2021-05-21 20:23:59,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:59,346 INFO L82 PathProgramCache]: Analyzing trace with hash -847591687, now seen corresponding path program 486 times [2021-05-21 20:23:59,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:59,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486378278] [2021-05-21 20:23:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:59,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:59,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486378278] [2021-05-21 20:23:59,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486378278] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:59,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:59,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:59,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715947719] [2021-05-21 20:23:59,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:59,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:59,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:59,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:59,429 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) [2021-05-21 20:23:59,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:59,494 INFO L93 Difference]: Finished difference Result 2615 states and 9492 transitions. [2021-05-21 20:23:59,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:59,494 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 [2021-05-21 20:23:59,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:59,499 INFO L225 Difference]: With dead ends: 2615 [2021-05-21 20:23:59,499 INFO L226 Difference]: Without dead ends: 2390 [2021-05-21 20:23:59,499 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 [2021-05-21 20:23:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-05-21 20:23:59,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1262. [2021-05-21 20:23:59,537 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) [2021-05-21 20:23:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4937 transitions. [2021-05-21 20:23:59,540 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4937 transitions. Word has length 25 [2021-05-21 20:23:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:59,540 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4937 transitions. [2021-05-21 20:23:59,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:59,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4937 transitions. [2021-05-21 20:23:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:59,542 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:59,542 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:59,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable490 [2021-05-21 20:23:59,542 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]=== [2021-05-21 20:23:59,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:59,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1783381319, now seen corresponding path program 487 times [2021-05-21 20:23:59,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:59,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416373747] [2021-05-21 20:23:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:59,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:59,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416373747] [2021-05-21 20:23:59,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416373747] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:59,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:59,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:59,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160172770] [2021-05-21 20:23:59,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:59,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:59,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:59,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:59,637 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) [2021-05-21 20:23:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:59,686 INFO L93 Difference]: Finished difference Result 2539 states and 9248 transitions. [2021-05-21 20:23:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:59,687 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 [2021-05-21 20:23:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:59,691 INFO L225 Difference]: With dead ends: 2539 [2021-05-21 20:23:59,691 INFO L226 Difference]: Without dead ends: 2380 [2021-05-21 20:23:59,691 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 [2021-05-21 20:23:59,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-05-21 20:23:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1286. [2021-05-21 20:23:59,720 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) [2021-05-21 20:23:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5021 transitions. [2021-05-21 20:23:59,722 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5021 transitions. Word has length 25 [2021-05-21 20:23:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:59,722 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5021 transitions. [2021-05-21 20:23:59,722 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) [2021-05-21 20:23:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5021 transitions. [2021-05-21 20:23:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:59,724 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:59,724 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:59,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable491 [2021-05-21 20:23:59,724 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]=== [2021-05-21 20:23:59,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:59,724 INFO L82 PathProgramCache]: Analyzing trace with hash 921651227, now seen corresponding path program 488 times [2021-05-21 20:23:59,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:59,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191389847] [2021-05-21 20:23:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:59,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:59,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191389847] [2021-05-21 20:23:59,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191389847] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:59,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:59,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:59,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888224649] [2021-05-21 20:23:59,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:59,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:59,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:59,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:59,805 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) [2021-05-21 20:23:59,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:23:59,874 INFO L93 Difference]: Finished difference Result 2569 states and 9341 transitions. [2021-05-21 20:23:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:23:59,874 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 [2021-05-21 20:23:59,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:23:59,879 INFO L225 Difference]: With dead ends: 2569 [2021-05-21 20:23:59,879 INFO L226 Difference]: Without dead ends: 2364 [2021-05-21 20:23:59,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:23:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2021-05-21 20:23:59,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 1270. [2021-05-21 20:23:59,908 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) [2021-05-21 20:23:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4965 transitions. [2021-05-21 20:23:59,910 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4965 transitions. Word has length 25 [2021-05-21 20:23:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:23:59,910 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4965 transitions. [2021-05-21 20:23:59,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:23:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4965 transitions. [2021-05-21 20:23:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:23:59,912 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:23:59,912 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:23:59,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492 [2021-05-21 20:23:59,912 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]=== [2021-05-21 20:23:59,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:23:59,912 INFO L82 PathProgramCache]: Analyzing trace with hash 823339705, now seen corresponding path program 489 times [2021-05-21 20:23:59,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:23:59,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130397452] [2021-05-21 20:23:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:23:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:23:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:23:59,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:23:59,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130397452] [2021-05-21 20:23:59,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130397452] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:23:59,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:23:59,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:23:59,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164892291] [2021-05-21 20:23:59,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:23:59,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:23:59,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:23:59,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:23:59,986 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) [2021-05-21 20:24:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:00,036 INFO L93 Difference]: Finished difference Result 2533 states and 9223 transitions. [2021-05-21 20:24:00,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:00,036 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 [2021-05-21 20:24:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:00,040 INFO L225 Difference]: With dead ends: 2533 [2021-05-21 20:24:00,040 INFO L226 Difference]: Without dead ends: 2374 [2021-05-21 20:24:00,041 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:00,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-05-21 20:24:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1286. [2021-05-21 20:24:00,070 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) [2021-05-21 20:24:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5013 transitions. [2021-05-21 20:24:00,072 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5013 transitions. Word has length 25 [2021-05-21 20:24:00,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:00,072 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5013 transitions. [2021-05-21 20:24:00,072 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) [2021-05-21 20:24:00,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5013 transitions. [2021-05-21 20:24:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:00,074 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:00,074 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] [2021-05-21 20:24:00,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493 [2021-05-21 20:24:00,074 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]=== [2021-05-21 20:24:00,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:00,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1791130951, now seen corresponding path program 490 times [2021-05-21 20:24:00,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:00,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016765389] [2021-05-21 20:24:00,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:00,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:00,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016765389] [2021-05-21 20:24:00,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016765389] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:00,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:00,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:00,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968460062] [2021-05-21 20:24:00,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:00,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:00,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:00,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:00,149 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) [2021-05-21 20:24:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:00,214 INFO L93 Difference]: Finished difference Result 2557 states and 9299 transitions. [2021-05-21 20:24:00,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:00,214 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 [2021-05-21 20:24:00,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:00,218 INFO L225 Difference]: With dead ends: 2557 [2021-05-21 20:24:00,218 INFO L226 Difference]: Without dead ends: 2358 [2021-05-21 20:24:00,219 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 [2021-05-21 20:24:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-05-21 20:24:00,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 1270. [2021-05-21 20:24:00,248 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) [2021-05-21 20:24:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4957 transitions. [2021-05-21 20:24:00,250 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4957 transitions. Word has length 25 [2021-05-21 20:24:00,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:00,250 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4957 transitions. [2021-05-21 20:24:00,250 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) [2021-05-21 20:24:00,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4957 transitions. [2021-05-21 20:24:00,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:00,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:00,252 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] [2021-05-21 20:24:00,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable494 [2021-05-21 20:24:00,252 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]=== [2021-05-21 20:24:00,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:00,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2054465637, now seen corresponding path program 491 times [2021-05-21 20:24:00,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:00,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101346531] [2021-05-21 20:24:00,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:00,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:00,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101346531] [2021-05-21 20:24:00,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101346531] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:00,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:00,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:00,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268314037] [2021-05-21 20:24:00,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:00,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:00,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:00,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:00,325 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) [2021-05-21 20:24:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:00,383 INFO L93 Difference]: Finished difference Result 2605 states and 9485 transitions. [2021-05-21 20:24:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:00,383 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 [2021-05-21 20:24:00,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:00,388 INFO L225 Difference]: With dead ends: 2605 [2021-05-21 20:24:00,388 INFO L226 Difference]: Without dead ends: 2416 [2021-05-21 20:24:00,388 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-05-21 20:24:00,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1298. [2021-05-21 20:24:00,417 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) [2021-05-21 20:24:00,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5045 transitions. [2021-05-21 20:24:00,419 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5045 transitions. Word has length 25 [2021-05-21 20:24:00,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:00,420 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5045 transitions. [2021-05-21 20:24:00,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:00,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5045 transitions. [2021-05-21 20:24:00,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:00,421 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:00,421 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:00,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495 [2021-05-21 20:24:00,421 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]=== [2021-05-21 20:24:00,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:00,422 INFO L82 PathProgramCache]: Analyzing trace with hash 848357113, now seen corresponding path program 492 times [2021-05-21 20:24:00,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:00,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728416913] [2021-05-21 20:24:00,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:00,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:00,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728416913] [2021-05-21 20:24:00,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728416913] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:00,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:00,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:00,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900817150] [2021-05-21 20:24:00,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:00,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:00,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:00,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:00,495 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) [2021-05-21 20:24:00,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:00,559 INFO L93 Difference]: Finished difference Result 2599 states and 9440 transitions. [2021-05-21 20:24:00,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:00,560 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 [2021-05-21 20:24:00,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:00,564 INFO L225 Difference]: With dead ends: 2599 [2021-05-21 20:24:00,564 INFO L226 Difference]: Without dead ends: 2380 [2021-05-21 20:24:00,564 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 [2021-05-21 20:24:00,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-05-21 20:24:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1262. [2021-05-21 20:24:00,593 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) [2021-05-21 20:24:00,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4933 transitions. [2021-05-21 20:24:00,595 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4933 transitions. Word has length 25 [2021-05-21 20:24:00,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:00,595 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4933 transitions. [2021-05-21 20:24:00,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:00,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4933 transitions. [2021-05-21 20:24:00,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:00,597 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:00,597 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] [2021-05-21 20:24:00,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable496 [2021-05-21 20:24:00,597 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]=== [2021-05-21 20:24:00,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:00,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1395376357, now seen corresponding path program 493 times [2021-05-21 20:24:00,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:00,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697672262] [2021-05-21 20:24:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:00,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:00,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697672262] [2021-05-21 20:24:00,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697672262] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:00,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:00,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:00,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223915736] [2021-05-21 20:24:00,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:00,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:00,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:00,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:00,684 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) [2021-05-21 20:24:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:00,735 INFO L93 Difference]: Finished difference Result 2535 states and 9234 transitions. [2021-05-21 20:24:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:00,735 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 [2021-05-21 20:24:00,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:00,739 INFO L225 Difference]: With dead ends: 2535 [2021-05-21 20:24:00,739 INFO L226 Difference]: Without dead ends: 2376 [2021-05-21 20:24:00,740 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-05-21 20:24:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1286. [2021-05-21 20:24:00,769 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) [2021-05-21 20:24:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5017 transitions. [2021-05-21 20:24:00,771 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5017 transitions. Word has length 25 [2021-05-21 20:24:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:00,771 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5017 transitions. [2021-05-21 20:24:00,771 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) [2021-05-21 20:24:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5017 transitions. [2021-05-21 20:24:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:00,773 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:00,773 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] [2021-05-21 20:24:00,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable497 [2021-05-21 20:24:00,773 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]=== [2021-05-21 20:24:00,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:00,773 INFO L82 PathProgramCache]: Analyzing trace with hash -387078373, now seen corresponding path program 494 times [2021-05-21 20:24:00,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:00,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314540384] [2021-05-21 20:24:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:00,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:00,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314540384] [2021-05-21 20:24:00,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314540384] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:00,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:00,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:00,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176804910] [2021-05-21 20:24:00,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:00,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:00,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:00,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:00,865 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) [2021-05-21 20:24:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:00,928 INFO L93 Difference]: Finished difference Result 2563 states and 9322 transitions. [2021-05-21 20:24:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:00,928 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 [2021-05-21 20:24:00,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:00,933 INFO L225 Difference]: With dead ends: 2563 [2021-05-21 20:24:00,933 INFO L226 Difference]: Without dead ends: 2360 [2021-05-21 20:24:00,933 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 [2021-05-21 20:24:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2021-05-21 20:24:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 1270. [2021-05-21 20:24:00,962 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) [2021-05-21 20:24:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4961 transitions. [2021-05-21 20:24:00,964 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4961 transitions. Word has length 25 [2021-05-21 20:24:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:00,964 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4961 transitions. [2021-05-21 20:24:00,964 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) [2021-05-21 20:24:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4961 transitions. [2021-05-21 20:24:00,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:00,966 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:00,966 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] [2021-05-21 20:24:00,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable498 [2021-05-21 20:24:00,966 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]=== [2021-05-21 20:24:00,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:00,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2052793977, now seen corresponding path program 495 times [2021-05-21 20:24:00,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:00,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407895118] [2021-05-21 20:24:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:01,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:01,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407895118] [2021-05-21 20:24:01,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407895118] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:01,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:01,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:01,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803007265] [2021-05-21 20:24:01,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:01,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:01,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:01,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:01,043 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) [2021-05-21 20:24:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:01,089 INFO L93 Difference]: Finished difference Result 2531 states and 9214 transitions. [2021-05-21 20:24:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:01,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:01,094 INFO L225 Difference]: With dead ends: 2531 [2021-05-21 20:24:01,094 INFO L226 Difference]: Without dead ends: 2372 [2021-05-21 20:24:01,094 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 [2021-05-21 20:24:01,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2021-05-21 20:24:01,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 1286. [2021-05-21 20:24:01,123 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) [2021-05-21 20:24:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5009 transitions. [2021-05-21 20:24:01,126 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5009 transitions. Word has length 25 [2021-05-21 20:24:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:01,126 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 5009 transitions. [2021-05-21 20:24:01,126 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) [2021-05-21 20:24:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5009 transitions. [2021-05-21 20:24:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:01,127 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:01,127 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:01,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable499 [2021-05-21 20:24:01,127 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]=== [2021-05-21 20:24:01,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:01,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2022934299, now seen corresponding path program 496 times [2021-05-21 20:24:01,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:01,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978810145] [2021-05-21 20:24:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:01,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:01,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978810145] [2021-05-21 20:24:01,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978810145] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:01,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:01,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:01,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819425919] [2021-05-21 20:24:01,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:01,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:01,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:01,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:01,202 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) [2021-05-21 20:24:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:01,263 INFO L93 Difference]: Finished difference Result 2555 states and 9290 transitions. [2021-05-21 20:24:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:01,263 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 [2021-05-21 20:24:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:01,267 INFO L225 Difference]: With dead ends: 2555 [2021-05-21 20:24:01,267 INFO L226 Difference]: Without dead ends: 2356 [2021-05-21 20:24:01,267 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 [2021-05-21 20:24:01,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2021-05-21 20:24:01,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1270. [2021-05-21 20:24:01,297 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) [2021-05-21 20:24:01,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4953 transitions. [2021-05-21 20:24:01,299 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4953 transitions. Word has length 25 [2021-05-21 20:24:01,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:01,299 INFO L482 AbstractCegarLoop]: Abstraction has 1270 states and 4953 transitions. [2021-05-21 20:24:01,299 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) [2021-05-21 20:24:01,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4953 transitions. [2021-05-21 20:24:01,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:01,301 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:01,301 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] [2021-05-21 20:24:01,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500 [2021-05-21 20:24:01,301 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]=== [2021-05-21 20:24:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:01,301 INFO L82 PathProgramCache]: Analyzing trace with hash -337510629, now seen corresponding path program 497 times [2021-05-21 20:24:01,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:01,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796239462] [2021-05-21 20:24:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:01,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:01,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796239462] [2021-05-21 20:24:01,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796239462] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:01,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:01,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:01,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959525463] [2021-05-21 20:24:01,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:01,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:01,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:01,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:01,377 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) [2021-05-21 20:24:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:01,443 INFO L93 Difference]: Finished difference Result 2599 states and 9466 transitions. [2021-05-21 20:24:01,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:01,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:01,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:01,448 INFO L225 Difference]: With dead ends: 2599 [2021-05-21 20:24:01,448 INFO L226 Difference]: Without dead ends: 2412 [2021-05-21 20:24:01,448 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 [2021-05-21 20:24:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-05-21 20:24:01,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1298. [2021-05-21 20:24:01,478 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) [2021-05-21 20:24:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5041 transitions. [2021-05-21 20:24:01,480 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5041 transitions. Word has length 25 [2021-05-21 20:24:01,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:01,480 INFO L482 AbstractCegarLoop]: Abstraction has 1298 states and 5041 transitions. [2021-05-21 20:24:01,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:01,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5041 transitions. [2021-05-21 20:24:01,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:01,482 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:01,482 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] [2021-05-21 20:24:01,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable501 [2021-05-21 20:24:01,482 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]=== [2021-05-21 20:24:01,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:01,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1914119673, now seen corresponding path program 498 times [2021-05-21 20:24:01,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:01,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995473265] [2021-05-21 20:24:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:01,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:01,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995473265] [2021-05-21 20:24:01,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995473265] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:01,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:01,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:01,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271125792] [2021-05-21 20:24:01,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:01,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:01,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:01,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:01,568 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) [2021-05-21 20:24:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:01,631 INFO L93 Difference]: Finished difference Result 2595 states and 9426 transitions. [2021-05-21 20:24:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:01,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:01,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:01,636 INFO L225 Difference]: With dead ends: 2595 [2021-05-21 20:24:01,636 INFO L226 Difference]: Without dead ends: 2376 [2021-05-21 20:24:01,636 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 [2021-05-21 20:24:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-05-21 20:24:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1262. [2021-05-21 20:24:01,665 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) [2021-05-21 20:24:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4929 transitions. [2021-05-21 20:24:01,667 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4929 transitions. Word has length 25 [2021-05-21 20:24:01,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:01,667 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4929 transitions. [2021-05-21 20:24:01,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4929 transitions. [2021-05-21 20:24:01,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:01,669 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:01,669 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:01,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502 [2021-05-21 20:24:01,669 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]=== [2021-05-21 20:24:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash -671272067, now seen corresponding path program 499 times [2021-05-21 20:24:01,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:01,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114716450] [2021-05-21 20:24:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:01,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:01,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114716450] [2021-05-21 20:24:01,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114716450] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:01,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:01,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:01,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029998926] [2021-05-21 20:24:01,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:01,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:01,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:01,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:01,743 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) [2021-05-21 20:24:01,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:01,801 INFO L93 Difference]: Finished difference Result 2671 states and 9756 transitions. [2021-05-21 20:24:01,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:01,802 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 [2021-05-21 20:24:01,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:01,806 INFO L225 Difference]: With dead ends: 2671 [2021-05-21 20:24:01,806 INFO L226 Difference]: Without dead ends: 2482 [2021-05-21 20:24:01,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2021-05-21 20:24:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1306. [2021-05-21 20:24:01,836 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) [2021-05-21 20:24:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5087 transitions. [2021-05-21 20:24:01,839 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5087 transitions. Word has length 25 [2021-05-21 20:24:01,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:01,839 INFO L482 AbstractCegarLoop]: Abstraction has 1306 states and 5087 transitions. [2021-05-21 20:24:01,839 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) [2021-05-21 20:24:01,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5087 transitions. [2021-05-21 20:24:01,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:01,840 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:01,840 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] [2021-05-21 20:24:01,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable503 [2021-05-21 20:24:01,841 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]=== [2021-05-21 20:24:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:01,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1580358235, now seen corresponding path program 500 times [2021-05-21 20:24:01,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:01,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168871368] [2021-05-21 20:24:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:01,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:01,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168871368] [2021-05-21 20:24:01,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168871368] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:01,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:01,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:01,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432832502] [2021-05-21 20:24:01,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:01,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:01,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:01,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:01,921 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) [2021-05-21 20:24:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:01,979 INFO L93 Difference]: Finished difference Result 2669 states and 9721 transitions. [2021-05-21 20:24:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:01,979 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 [2021-05-21 20:24:01,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:01,984 INFO L225 Difference]: With dead ends: 2669 [2021-05-21 20:24:01,984 INFO L226 Difference]: Without dead ends: 2452 [2021-05-21 20:24:01,984 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 [2021-05-21 20:24:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2021-05-21 20:24:02,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 1276. [2021-05-21 20:24:02,013 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) [2021-05-21 20:24:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4980 transitions. [2021-05-21 20:24:02,016 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4980 transitions. Word has length 25 [2021-05-21 20:24:02,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:02,016 INFO L482 AbstractCegarLoop]: Abstraction has 1276 states and 4980 transitions. [2021-05-21 20:24:02,016 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) [2021-05-21 20:24:02,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4980 transitions. [2021-05-21 20:24:02,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:02,017 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:02,017 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:02,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable504 [2021-05-21 20:24:02,018 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]=== [2021-05-21 20:24:02,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:02,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1518069029, now seen corresponding path program 501 times [2021-05-21 20:24:02,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:02,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966099455] [2021-05-21 20:24:02,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:02,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:02,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966099455] [2021-05-21 20:24:02,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966099455] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:02,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:02,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:02,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687016822] [2021-05-21 20:24:02,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:02,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:02,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:02,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:02,093 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) [2021-05-21 20:24:02,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:02,151 INFO L93 Difference]: Finished difference Result 2665 states and 9723 transitions. [2021-05-21 20:24:02,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:02,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:02,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:02,155 INFO L225 Difference]: With dead ends: 2665 [2021-05-21 20:24:02,155 INFO L226 Difference]: Without dead ends: 2476 [2021-05-21 20:24:02,155 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 [2021-05-21 20:24:02,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-05-21 20:24:02,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 1304. [2021-05-21 20:24:02,186 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) [2021-05-21 20:24:02,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 5068 transitions. [2021-05-21 20:24:02,188 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 5068 transitions. Word has length 25 [2021-05-21 20:24:02,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:02,188 INFO L482 AbstractCegarLoop]: Abstraction has 1304 states and 5068 transitions. [2021-05-21 20:24:02,188 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) [2021-05-21 20:24:02,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 5068 transitions. [2021-05-21 20:24:02,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:02,190 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:02,190 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:02,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505 [2021-05-21 20:24:02,190 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]=== [2021-05-21 20:24:02,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:02,190 INFO L82 PathProgramCache]: Analyzing trace with hash -325602597, now seen corresponding path program 502 times [2021-05-21 20:24:02,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:02,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005920443] [2021-05-21 20:24:02,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:02,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:02,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005920443] [2021-05-21 20:24:02,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005920443] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:02,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:02,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:02,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972912753] [2021-05-21 20:24:02,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:02,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:02,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:02,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:02,264 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) [2021-05-21 20:24:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:02,327 INFO L93 Difference]: Finished difference Result 2659 states and 9678 transitions. [2021-05-21 20:24:02,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:02,328 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 [2021-05-21 20:24:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:02,332 INFO L225 Difference]: With dead ends: 2659 [2021-05-21 20:24:02,332 INFO L226 Difference]: Without dead ends: 2448 [2021-05-21 20:24:02,332 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 [2021-05-21 20:24:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2021-05-21 20:24:02,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 1276. [2021-05-21 20:24:02,362 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) [2021-05-21 20:24:02,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4966 transitions. [2021-05-21 20:24:02,364 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4966 transitions. Word has length 25 [2021-05-21 20:24:02,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:02,364 INFO L482 AbstractCegarLoop]: Abstraction has 1276 states and 4966 transitions. [2021-05-21 20:24:02,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4966 transitions. [2021-05-21 20:24:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:02,365 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:02,365 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:02,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable506 [2021-05-21 20:24:02,366 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]=== [2021-05-21 20:24:02,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:02,366 INFO L82 PathProgramCache]: Analyzing trace with hash -535721415, now seen corresponding path program 503 times [2021-05-21 20:24:02,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:02,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422997016] [2021-05-21 20:24:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:02,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:02,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422997016] [2021-05-21 20:24:02,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422997016] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:02,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:02,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:02,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594516016] [2021-05-21 20:24:02,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:02,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:02,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:02,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:02,455 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) [2021-05-21 20:24:02,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:02,529 INFO L93 Difference]: Finished difference Result 2661 states and 9699 transitions. [2021-05-21 20:24:02,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:02,529 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 [2021-05-21 20:24:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:02,535 INFO L225 Difference]: With dead ends: 2661 [2021-05-21 20:24:02,535 INFO L226 Difference]: Without dead ends: 2474 [2021-05-21 20:24:02,535 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-05-21 20:24:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1304. [2021-05-21 20:24:02,579 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) [2021-05-21 20:24:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 5054 transitions. [2021-05-21 20:24:02,582 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 5054 transitions. Word has length 25 [2021-05-21 20:24:02,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:02,583 INFO L482 AbstractCegarLoop]: Abstraction has 1304 states and 5054 transitions. [2021-05-21 20:24:02,583 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) [2021-05-21 20:24:02,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 5054 transitions. [2021-05-21 20:24:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:02,585 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:02,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:02,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable507 [2021-05-21 20:24:02,585 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]=== [2021-05-21 20:24:02,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:02,586 INFO L82 PathProgramCache]: Analyzing trace with hash 545341211, now seen corresponding path program 504 times [2021-05-21 20:24:02,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:02,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124279776] [2021-05-21 20:24:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:02,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:02,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124279776] [2021-05-21 20:24:02,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124279776] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:02,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:02,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:02,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958363084] [2021-05-21 20:24:02,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:02,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:02,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:02,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:02,676 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) [2021-05-21 20:24:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:02,759 INFO L93 Difference]: Finished difference Result 2657 states and 9659 transitions. [2021-05-21 20:24:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:02,759 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 [2021-05-21 20:24:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:02,765 INFO L225 Difference]: With dead ends: 2657 [2021-05-21 20:24:02,765 INFO L226 Difference]: Without dead ends: 2428 [2021-05-21 20:24:02,765 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 [2021-05-21 20:24:02,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2021-05-21 20:24:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1258. [2021-05-21 20:24:02,806 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) [2021-05-21 20:24:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4919 transitions. [2021-05-21 20:24:02,809 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4919 transitions. Word has length 25 [2021-05-21 20:24:02,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:02,810 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4919 transitions. [2021-05-21 20:24:02,810 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) [2021-05-21 20:24:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4919 transitions. [2021-05-21 20:24:02,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:02,812 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:02,812 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] [2021-05-21 20:24:02,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508 [2021-05-21 20:24:02,812 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]=== [2021-05-21 20:24:02,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:02,812 INFO L82 PathProgramCache]: Analyzing trace with hash 407122489, now seen corresponding path program 505 times [2021-05-21 20:24:02,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:02,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409268107] [2021-05-21 20:24:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:02,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:02,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409268107] [2021-05-21 20:24:02,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409268107] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:02,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:02,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:02,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925704215] [2021-05-21 20:24:02,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:02,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:02,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:02,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:02,906 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) [2021-05-21 20:24:02,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:02,959 INFO L93 Difference]: Finished difference Result 2515 states and 9144 transitions. [2021-05-21 20:24:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:02,959 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 [2021-05-21 20:24:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:02,963 INFO L225 Difference]: With dead ends: 2515 [2021-05-21 20:24:02,964 INFO L226 Difference]: Without dead ends: 2356 [2021-05-21 20:24:02,964 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 [2021-05-21 20:24:02,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2021-05-21 20:24:02,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1274. [2021-05-21 20:24:02,993 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) [2021-05-21 20:24:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4967 transitions. [2021-05-21 20:24:02,995 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4967 transitions. Word has length 25 [2021-05-21 20:24:02,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:02,995 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4967 transitions. [2021-05-21 20:24:02,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:02,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4967 transitions. [2021-05-21 20:24:02,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:02,997 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:02,997 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:02,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509 [2021-05-21 20:24:02,997 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]=== [2021-05-21 20:24:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:02,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1182812261, now seen corresponding path program 506 times [2021-05-21 20:24:02,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:02,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114722801] [2021-05-21 20:24:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:03,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:03,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114722801] [2021-05-21 20:24:03,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114722801] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:03,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:03,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:03,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176965059] [2021-05-21 20:24:03,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:03,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:03,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:03,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:03,088 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) [2021-05-21 20:24:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:03,158 INFO L93 Difference]: Finished difference Result 2545 states and 9237 transitions. [2021-05-21 20:24:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:03,158 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 [2021-05-21 20:24:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:03,162 INFO L225 Difference]: With dead ends: 2545 [2021-05-21 20:24:03,162 INFO L226 Difference]: Without dead ends: 2340 [2021-05-21 20:24:03,162 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 [2021-05-21 20:24:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2021-05-21 20:24:03,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1258. [2021-05-21 20:24:03,191 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) [2021-05-21 20:24:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4911 transitions. [2021-05-21 20:24:03,193 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4911 transitions. Word has length 25 [2021-05-21 20:24:03,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:03,193 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4911 transitions. [2021-05-21 20:24:03,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:03,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4911 transitions. [2021-05-21 20:24:03,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:03,195 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:03,195 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] [2021-05-21 20:24:03,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable510 [2021-05-21 20:24:03,195 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]=== [2021-05-21 20:24:03,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:03,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1488185115, now seen corresponding path program 507 times [2021-05-21 20:24:03,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:03,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177601448] [2021-05-21 20:24:03,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:03,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:03,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177601448] [2021-05-21 20:24:03,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177601448] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:03,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:03,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:03,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624747240] [2021-05-21 20:24:03,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:03,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:03,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:03,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:03,291 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) [2021-05-21 20:24:03,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:03,350 INFO L93 Difference]: Finished difference Result 2513 states and 9131 transitions. [2021-05-21 20:24:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:03,350 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 [2021-05-21 20:24:03,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:03,354 INFO L225 Difference]: With dead ends: 2513 [2021-05-21 20:24:03,354 INFO L226 Difference]: Without dead ends: 2354 [2021-05-21 20:24:03,354 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 [2021-05-21 20:24:03,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-05-21 20:24:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1274. [2021-05-21 20:24:03,386 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) [2021-05-21 20:24:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4959 transitions. [2021-05-21 20:24:03,388 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4959 transitions. Word has length 25 [2021-05-21 20:24:03,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:03,388 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4959 transitions. [2021-05-21 20:24:03,388 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) [2021-05-21 20:24:03,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4959 transitions. [2021-05-21 20:24:03,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:03,390 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:03,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:03,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable511 [2021-05-21 20:24:03,390 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]=== [2021-05-21 20:24:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:03,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1798484197, now seen corresponding path program 508 times [2021-05-21 20:24:03,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:03,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877921498] [2021-05-21 20:24:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:03,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:03,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877921498] [2021-05-21 20:24:03,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877921498] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:03,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:03,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:03,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721577127] [2021-05-21 20:24:03,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:03,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:03,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:03,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:03,493 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) [2021-05-21 20:24:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:03,556 INFO L93 Difference]: Finished difference Result 2541 states and 9219 transitions. [2021-05-21 20:24:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:03,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:03,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:03,561 INFO L225 Difference]: With dead ends: 2541 [2021-05-21 20:24:03,561 INFO L226 Difference]: Without dead ends: 2338 [2021-05-21 20:24:03,561 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 [2021-05-21 20:24:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2021-05-21 20:24:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1258. [2021-05-21 20:24:03,591 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) [2021-05-21 20:24:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4903 transitions. [2021-05-21 20:24:03,593 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4903 transitions. Word has length 25 [2021-05-21 20:24:03,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:03,593 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4903 transitions. [2021-05-21 20:24:03,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:03,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4903 transitions. [2021-05-21 20:24:03,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:03,607 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:03,607 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] [2021-05-21 20:24:03,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable512 [2021-05-21 20:24:03,607 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]=== [2021-05-21 20:24:03,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:03,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1389620227, now seen corresponding path program 509 times [2021-05-21 20:24:03,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:03,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979230895] [2021-05-21 20:24:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:03,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:03,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979230895] [2021-05-21 20:24:03,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979230895] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:03,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:03,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:03,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532794351] [2021-05-21 20:24:03,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:03,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:03,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:03,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:03,687 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) [2021-05-21 20:24:03,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:03,746 INFO L93 Difference]: Finished difference Result 2587 states and 9400 transitions. [2021-05-21 20:24:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:03,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:03,751 INFO L225 Difference]: With dead ends: 2587 [2021-05-21 20:24:03,751 INFO L226 Difference]: Without dead ends: 2398 [2021-05-21 20:24:03,751 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 [2021-05-21 20:24:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2021-05-21 20:24:03,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 1288. [2021-05-21 20:24:03,780 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) [2021-05-21 20:24:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 4996 transitions. [2021-05-21 20:24:03,782 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 4996 transitions. Word has length 25 [2021-05-21 20:24:03,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:03,782 INFO L482 AbstractCegarLoop]: Abstraction has 1288 states and 4996 transitions. [2021-05-21 20:24:03,782 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) [2021-05-21 20:24:03,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 4996 transitions. [2021-05-21 20:24:03,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:03,784 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:03,784 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] [2021-05-21 20:24:03,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable513 [2021-05-21 20:24:03,784 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]=== [2021-05-21 20:24:03,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:03,784 INFO L82 PathProgramCache]: Analyzing trace with hash 862010075, now seen corresponding path program 510 times [2021-05-21 20:24:03,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:03,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090640331] [2021-05-21 20:24:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:03,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:03,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090640331] [2021-05-21 20:24:03,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090640331] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:03,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:03,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:03,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103426877] [2021-05-21 20:24:03,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:03,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:03,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:03,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:03,890 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) [2021-05-21 20:24:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:03,954 INFO L93 Difference]: Finished difference Result 2585 states and 9365 transitions. [2021-05-21 20:24:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:03,955 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 [2021-05-21 20:24:03,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:03,959 INFO L225 Difference]: With dead ends: 2585 [2021-05-21 20:24:03,959 INFO L226 Difference]: Without dead ends: 2360 [2021-05-21 20:24:03,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2021-05-21 20:24:03,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 1250. [2021-05-21 20:24:03,988 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) [2021-05-21 20:24:03,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4879 transitions. [2021-05-21 20:24:03,991 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4879 transitions. Word has length 25 [2021-05-21 20:24:03,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:03,991 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4879 transitions. [2021-05-21 20:24:03,991 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) [2021-05-21 20:24:03,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4879 transitions. [2021-05-21 20:24:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:03,992 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:03,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:03,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable514 [2021-05-21 20:24:03,992 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]=== [2021-05-21 20:24:03,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:03,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1500092985, now seen corresponding path program 511 times [2021-05-21 20:24:03,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:03,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978885372] [2021-05-21 20:24:03,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:04,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:04,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978885372] [2021-05-21 20:24:04,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978885372] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:04,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:04,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:04,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935764108] [2021-05-21 20:24:04,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:04,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:04,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:04,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:04,084 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) [2021-05-21 20:24:04,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:04,136 INFO L93 Difference]: Finished difference Result 2481 states and 9013 transitions. [2021-05-21 20:24:04,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:04,136 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 [2021-05-21 20:24:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:04,140 INFO L225 Difference]: With dead ends: 2481 [2021-05-21 20:24:04,140 INFO L226 Difference]: Without dead ends: 2322 [2021-05-21 20:24:04,140 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 [2021-05-21 20:24:04,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2021-05-21 20:24:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 1274. [2021-05-21 20:24:04,169 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) [2021-05-21 20:24:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4963 transitions. [2021-05-21 20:24:04,171 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4963 transitions. Word has length 25 [2021-05-21 20:24:04,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:04,171 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4963 transitions. [2021-05-21 20:24:04,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:04,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4963 transitions. [2021-05-21 20:24:04,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:04,173 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:04,173 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:04,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable515 [2021-05-21 20:24:04,173 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]=== [2021-05-21 20:24:04,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:04,173 INFO L82 PathProgramCache]: Analyzing trace with hash -89841765, now seen corresponding path program 512 times [2021-05-21 20:24:04,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:04,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99476425] [2021-05-21 20:24:04,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:04,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:04,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99476425] [2021-05-21 20:24:04,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99476425] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:04,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:04,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:04,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901126209] [2021-05-21 20:24:04,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:04,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:04,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:04,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:04,264 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) [2021-05-21 20:24:04,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:04,351 INFO L93 Difference]: Finished difference Result 2511 states and 9106 transitions. [2021-05-21 20:24:04,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:04,351 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 [2021-05-21 20:24:04,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:04,355 INFO L225 Difference]: With dead ends: 2511 [2021-05-21 20:24:04,355 INFO L226 Difference]: Without dead ends: 2306 [2021-05-21 20:24:04,355 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 [2021-05-21 20:24:04,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2021-05-21 20:24:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1258. [2021-05-21 20:24:04,384 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) [2021-05-21 20:24:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4907 transitions. [2021-05-21 20:24:04,386 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4907 transitions. Word has length 25 [2021-05-21 20:24:04,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:04,386 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4907 transitions. [2021-05-21 20:24:04,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:04,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4907 transitions. [2021-05-21 20:24:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:04,388 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:04,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:04,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable516 [2021-05-21 20:24:04,388 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]=== [2021-05-21 20:24:04,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:04,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1549660729, now seen corresponding path program 513 times [2021-05-21 20:24:04,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:04,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429808255] [2021-05-21 20:24:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:04,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:04,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429808255] [2021-05-21 20:24:04,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429808255] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:04,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:04,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:04,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254282466] [2021-05-21 20:24:04,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:04,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:04,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:04,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:04,473 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) [2021-05-21 20:24:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:04,526 INFO L93 Difference]: Finished difference Result 2435 states and 8848 transitions. [2021-05-21 20:24:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:04,526 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 [2021-05-21 20:24:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:04,530 INFO L225 Difference]: With dead ends: 2435 [2021-05-21 20:24:04,530 INFO L226 Difference]: Without dead ends: 2276 [2021-05-21 20:24:04,530 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 [2021-05-21 20:24:04,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2021-05-21 20:24:04,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 1274. [2021-05-21 20:24:04,559 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) [2021-05-21 20:24:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4955 transitions. [2021-05-21 20:24:04,562 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4955 transitions. Word has length 25 [2021-05-21 20:24:04,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:04,562 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4955 transitions. [2021-05-21 20:24:04,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:04,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4955 transitions. [2021-05-21 20:24:04,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:04,563 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:04,563 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:04,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable517 [2021-05-21 20:24:04,563 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]=== [2021-05-21 20:24:04,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:04,564 INFO L82 PathProgramCache]: Analyzing trace with hash -392611271, now seen corresponding path program 514 times [2021-05-21 20:24:04,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:04,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406963810] [2021-05-21 20:24:04,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:04,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:04,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406963810] [2021-05-21 20:24:04,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406963810] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:04,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:04,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:04,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202017243] [2021-05-21 20:24:04,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:04,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:04,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:04,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:04,647 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) [2021-05-21 20:24:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:04,709 INFO L93 Difference]: Finished difference Result 2323 states and 8511 transitions. [2021-05-21 20:24:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:04,710 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 [2021-05-21 20:24:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:04,714 INFO L225 Difference]: With dead ends: 2323 [2021-05-21 20:24:04,714 INFO L226 Difference]: Without dead ends: 2132 [2021-05-21 20:24:04,714 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 [2021-05-21 20:24:04,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2021-05-21 20:24:04,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1258. [2021-05-21 20:24:04,742 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) [2021-05-21 20:24:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4899 transitions. [2021-05-21 20:24:04,744 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4899 transitions. Word has length 25 [2021-05-21 20:24:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:04,744 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4899 transitions. [2021-05-21 20:24:04,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4899 transitions. [2021-05-21 20:24:04,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:04,746 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:04,746 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:04,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable518 [2021-05-21 20:24:04,746 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]=== [2021-05-21 20:24:04,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:04,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1328144613, now seen corresponding path program 515 times [2021-05-21 20:24:04,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:04,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116438035] [2021-05-21 20:24:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:04,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:04,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116438035] [2021-05-21 20:24:04,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116438035] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:04,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:04,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:04,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730784727] [2021-05-21 20:24:04,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:04,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:04,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:04,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:04,838 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) [2021-05-21 20:24:04,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:04,903 INFO L93 Difference]: Finished difference Result 2473 states and 8985 transitions. [2021-05-21 20:24:04,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:04,903 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 [2021-05-21 20:24:04,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:04,907 INFO L225 Difference]: With dead ends: 2473 [2021-05-21 20:24:04,907 INFO L226 Difference]: Without dead ends: 2284 [2021-05-21 20:24:04,907 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 [2021-05-21 20:24:04,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2021-05-21 20:24:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 1282. [2021-05-21 20:24:04,936 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) [2021-05-21 20:24:04,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 4975 transitions. [2021-05-21 20:24:04,938 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 4975 transitions. Word has length 25 [2021-05-21 20:24:04,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:04,938 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 4975 transitions. [2021-05-21 20:24:04,938 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) [2021-05-21 20:24:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 4975 transitions. [2021-05-21 20:24:04,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:04,939 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:04,940 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] [2021-05-21 20:24:04,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519 [2021-05-21 20:24:04,940 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]=== [2021-05-21 20:24:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:04,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2069096711, now seen corresponding path program 516 times [2021-05-21 20:24:04,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:04,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640109518] [2021-05-21 20:24:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:05,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:05,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640109518] [2021-05-21 20:24:05,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640109518] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:05,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:05,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:05,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884933198] [2021-05-21 20:24:05,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:05,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:05,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:05,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:05,041 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) [2021-05-21 20:24:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:05,102 INFO L93 Difference]: Finished difference Result 2331 states and 8531 transitions. [2021-05-21 20:24:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:05,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:05,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:05,106 INFO L225 Difference]: With dead ends: 2331 [2021-05-21 20:24:05,106 INFO L226 Difference]: Without dead ends: 2124 [2021-05-21 20:24:05,106 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 [2021-05-21 20:24:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2021-05-21 20:24:05,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 1250. [2021-05-21 20:24:05,133 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) [2021-05-21 20:24:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4875 transitions. [2021-05-21 20:24:05,135 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4875 transitions. Word has length 25 [2021-05-21 20:24:05,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:05,135 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4875 transitions. [2021-05-21 20:24:05,136 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) [2021-05-21 20:24:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4875 transitions. [2021-05-21 20:24:05,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:05,137 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:05,137 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:05,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable520 [2021-05-21 20:24:05,137 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]=== [2021-05-21 20:24:05,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:05,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1888097947, now seen corresponding path program 517 times [2021-05-21 20:24:05,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:05,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296834113] [2021-05-21 20:24:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:05,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:05,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296834113] [2021-05-21 20:24:05,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296834113] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:05,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:05,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:05,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987617954] [2021-05-21 20:24:05,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:05,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:05,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:05,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:05,221 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) [2021-05-21 20:24:05,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:05,273 INFO L93 Difference]: Finished difference Result 2477 states and 8999 transitions. [2021-05-21 20:24:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:05,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:05,277 INFO L225 Difference]: With dead ends: 2477 [2021-05-21 20:24:05,277 INFO L226 Difference]: Without dead ends: 2318 [2021-05-21 20:24:05,277 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 [2021-05-21 20:24:05,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-05-21 20:24:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1274. [2021-05-21 20:24:05,306 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) [2021-05-21 20:24:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4959 transitions. [2021-05-21 20:24:05,309 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4959 transitions. Word has length 25 [2021-05-21 20:24:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:05,309 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4959 transitions. [2021-05-21 20:24:05,309 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) [2021-05-21 20:24:05,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4959 transitions. [2021-05-21 20:24:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:05,310 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:05,310 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:05,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable521 [2021-05-21 20:24:05,310 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]=== [2021-05-21 20:24:05,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:05,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1398571365, now seen corresponding path program 518 times [2021-05-21 20:24:05,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:05,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63958011] [2021-05-21 20:24:05,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:05,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:05,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:05,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63958011] [2021-05-21 20:24:05,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63958011] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:05,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:05,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:05,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553872557] [2021-05-21 20:24:05,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:05,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:05,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:05,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:05,395 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) [2021-05-21 20:24:05,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:05,466 INFO L93 Difference]: Finished difference Result 2505 states and 9087 transitions. [2021-05-21 20:24:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:05,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:05,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:05,470 INFO L225 Difference]: With dead ends: 2505 [2021-05-21 20:24:05,470 INFO L226 Difference]: Without dead ends: 2302 [2021-05-21 20:24:05,471 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 [2021-05-21 20:24:05,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2021-05-21 20:24:05,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1258. [2021-05-21 20:24:05,500 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) [2021-05-21 20:24:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4903 transitions. [2021-05-21 20:24:05,503 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4903 transitions. Word has length 25 [2021-05-21 20:24:05,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:05,503 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4903 transitions. [2021-05-21 20:24:05,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4903 transitions. [2021-05-21 20:24:05,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:05,504 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:05,504 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:05,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522 [2021-05-21 20:24:05,505 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]=== [2021-05-21 20:24:05,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:05,505 INFO L82 PathProgramCache]: Analyzing trace with hash -227981703, now seen corresponding path program 519 times [2021-05-21 20:24:05,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:05,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420229258] [2021-05-21 20:24:05,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:05,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:05,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420229258] [2021-05-21 20:24:05,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420229258] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:05,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:05,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:05,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87701517] [2021-05-21 20:24:05,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:05,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:05,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:05,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:05,584 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) [2021-05-21 20:24:05,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:05,638 INFO L93 Difference]: Finished difference Result 2433 states and 8839 transitions. [2021-05-21 20:24:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:05,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:05,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:05,643 INFO L225 Difference]: With dead ends: 2433 [2021-05-21 20:24:05,643 INFO L226 Difference]: Without dead ends: 2274 [2021-05-21 20:24:05,643 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2021-05-21 20:24:05,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1274. [2021-05-21 20:24:05,681 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) [2021-05-21 20:24:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4951 transitions. [2021-05-21 20:24:05,683 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4951 transitions. Word has length 25 [2021-05-21 20:24:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:05,684 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4951 transitions. [2021-05-21 20:24:05,684 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) [2021-05-21 20:24:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4951 transitions. [2021-05-21 20:24:05,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:05,685 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:05,685 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] [2021-05-21 20:24:05,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable523 [2021-05-21 20:24:05,685 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]=== [2021-05-21 20:24:05,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:05,686 INFO L82 PathProgramCache]: Analyzing trace with hash -873513317, now seen corresponding path program 520 times [2021-05-21 20:24:05,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:05,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290713603] [2021-05-21 20:24:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:05,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:05,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290713603] [2021-05-21 20:24:05,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290713603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:05,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:05,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:05,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920443891] [2021-05-21 20:24:05,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:05,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:05,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:05,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:05,761 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) [2021-05-21 20:24:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:05,823 INFO L93 Difference]: Finished difference Result 2321 states and 8502 transitions. [2021-05-21 20:24:05,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:05,824 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 [2021-05-21 20:24:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:05,827 INFO L225 Difference]: With dead ends: 2321 [2021-05-21 20:24:05,827 INFO L226 Difference]: Without dead ends: 2130 [2021-05-21 20:24:05,828 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 [2021-05-21 20:24:05,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2021-05-21 20:24:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1258. [2021-05-21 20:24:05,855 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) [2021-05-21 20:24:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4895 transitions. [2021-05-21 20:24:05,857 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4895 transitions. Word has length 25 [2021-05-21 20:24:05,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:05,857 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4895 transitions. [2021-05-21 20:24:05,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4895 transitions. [2021-05-21 20:24:05,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:05,859 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:05,859 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:05,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable524 [2021-05-21 20:24:05,859 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]=== [2021-05-21 20:24:05,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:05,859 INFO L82 PathProgramCache]: Analyzing trace with hash 388810395, now seen corresponding path program 521 times [2021-05-21 20:24:05,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:05,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406979944] [2021-05-21 20:24:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:05,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:05,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406979944] [2021-05-21 20:24:05,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406979944] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:05,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:05,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:05,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246528804] [2021-05-21 20:24:05,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:05,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:05,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:05,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:05,933 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) [2021-05-21 20:24:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:05,998 INFO L93 Difference]: Finished difference Result 2469 states and 8971 transitions. [2021-05-21 20:24:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:05,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:06,003 INFO L225 Difference]: With dead ends: 2469 [2021-05-21 20:24:06,003 INFO L226 Difference]: Without dead ends: 2282 [2021-05-21 20:24:06,003 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 [2021-05-21 20:24:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2021-05-21 20:24:06,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1282. [2021-05-21 20:24:06,032 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) [2021-05-21 20:24:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 4971 transitions. [2021-05-21 20:24:06,034 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 4971 transitions. Word has length 25 [2021-05-21 20:24:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:06,034 INFO L482 AbstractCegarLoop]: Abstraction has 1282 states and 4971 transitions. [2021-05-21 20:24:06,034 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) [2021-05-21 20:24:06,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 4971 transitions. [2021-05-21 20:24:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:06,036 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:06,036 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] [2021-05-21 20:24:06,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable525 [2021-05-21 20:24:06,036 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]=== [2021-05-21 20:24:06,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:06,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1003334151, now seen corresponding path program 522 times [2021-05-21 20:24:06,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:06,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749251254] [2021-05-21 20:24:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:06,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:06,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749251254] [2021-05-21 20:24:06,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749251254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:06,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:06,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:06,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116081590] [2021-05-21 20:24:06,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:06,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:06,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:06,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:06,113 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) [2021-05-21 20:24:06,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:06,180 INFO L93 Difference]: Finished difference Result 2329 states and 8522 transitions. [2021-05-21 20:24:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:06,185 INFO L225 Difference]: With dead ends: 2329 [2021-05-21 20:24:06,185 INFO L226 Difference]: Without dead ends: 2122 [2021-05-21 20:24:06,185 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 [2021-05-21 20:24:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-05-21 20:24:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1250. [2021-05-21 20:24:06,214 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) [2021-05-21 20:24:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4871 transitions. [2021-05-21 20:24:06,217 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4871 transitions. Word has length 25 [2021-05-21 20:24:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:06,217 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4871 transitions. [2021-05-21 20:24:06,217 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) [2021-05-21 20:24:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4871 transitions. [2021-05-21 20:24:06,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:06,218 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:06,218 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:06,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526 [2021-05-21 20:24:06,218 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]=== [2021-05-21 20:24:06,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:06,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1682765059, now seen corresponding path program 523 times [2021-05-21 20:24:06,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:06,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043959017] [2021-05-21 20:24:06,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:06,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:06,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043959017] [2021-05-21 20:24:06,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043959017] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:06,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:06,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:06,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851228224] [2021-05-21 20:24:06,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:06,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:06,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:06,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:06,300 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) [2021-05-21 20:24:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:06,364 INFO L93 Difference]: Finished difference Result 2593 states and 9437 transitions. [2021-05-21 20:24:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:06,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:06,368 INFO L225 Difference]: With dead ends: 2593 [2021-05-21 20:24:06,368 INFO L226 Difference]: Without dead ends: 2404 [2021-05-21 20:24:06,368 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 [2021-05-21 20:24:06,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2021-05-21 20:24:06,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1292. [2021-05-21 20:24:06,398 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) [2021-05-21 20:24:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 5020 transitions. [2021-05-21 20:24:06,400 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 5020 transitions. Word has length 25 [2021-05-21 20:24:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:06,400 INFO L482 AbstractCegarLoop]: Abstraction has 1292 states and 5020 transitions. [2021-05-21 20:24:06,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:06,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 5020 transitions. [2021-05-21 20:24:06,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:06,402 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:06,402 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] [2021-05-21 20:24:06,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable527 [2021-05-21 20:24:06,402 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]=== [2021-05-21 20:24:06,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:06,402 INFO L82 PathProgramCache]: Analyzing trace with hash 568865243, now seen corresponding path program 524 times [2021-05-21 20:24:06,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:06,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704482380] [2021-05-21 20:24:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:06,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:06,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704482380] [2021-05-21 20:24:06,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704482380] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:06,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:06,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:06,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460492745] [2021-05-21 20:24:06,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:06,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:06,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:06,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:06,475 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) [2021-05-21 20:24:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:06,536 INFO L93 Difference]: Finished difference Result 2591 states and 9402 transitions. [2021-05-21 20:24:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:06,536 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 [2021-05-21 20:24:06,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:06,540 INFO L225 Difference]: With dead ends: 2591 [2021-05-21 20:24:06,541 INFO L226 Difference]: Without dead ends: 2374 [2021-05-21 20:24:06,541 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 [2021-05-21 20:24:06,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-05-21 20:24:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1262. [2021-05-21 20:24:06,569 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) [2021-05-21 20:24:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4915 transitions. [2021-05-21 20:24:06,571 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4915 transitions. Word has length 25 [2021-05-21 20:24:06,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:06,572 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4915 transitions. [2021-05-21 20:24:06,572 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) [2021-05-21 20:24:06,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4915 transitions. [2021-05-21 20:24:06,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:06,573 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:06,573 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] [2021-05-21 20:24:06,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable528 [2021-05-21 20:24:06,573 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]=== [2021-05-21 20:24:06,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:06,573 INFO L82 PathProgramCache]: Analyzing trace with hash 496122587, now seen corresponding path program 525 times [2021-05-21 20:24:06,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:06,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887978451] [2021-05-21 20:24:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:06,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:06,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887978451] [2021-05-21 20:24:06,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887978451] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:06,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:06,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:06,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034776499] [2021-05-21 20:24:06,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:06,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:06,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:06,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:06,658 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) [2021-05-21 20:24:06,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:06,723 INFO L93 Difference]: Finished difference Result 2513 states and 9141 transitions. [2021-05-21 20:24:06,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:06,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:06,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:06,728 INFO L225 Difference]: With dead ends: 2513 [2021-05-21 20:24:06,728 INFO L226 Difference]: Without dead ends: 2324 [2021-05-21 20:24:06,728 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 [2021-05-21 20:24:06,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2021-05-21 20:24:06,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 1286. [2021-05-21 20:24:06,756 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) [2021-05-21 20:24:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 4991 transitions. [2021-05-21 20:24:06,759 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 4991 transitions. Word has length 25 [2021-05-21 20:24:06,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:06,759 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 4991 transitions. [2021-05-21 20:24:06,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 4991 transitions. [2021-05-21 20:24:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:06,760 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:06,760 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] [2021-05-21 20:24:06,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable529 [2021-05-21 20:24:06,761 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]=== [2021-05-21 20:24:06,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:06,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1051910875, now seen corresponding path program 526 times [2021-05-21 20:24:06,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:06,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375239952] [2021-05-21 20:24:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:06,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:06,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375239952] [2021-05-21 20:24:06,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375239952] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:06,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:06,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:06,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454622129] [2021-05-21 20:24:06,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:06,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:06,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:06,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:06,845 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) [2021-05-21 20:24:06,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:06,908 INFO L93 Difference]: Finished difference Result 2371 states and 8687 transitions. [2021-05-21 20:24:06,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:06,912 INFO L225 Difference]: With dead ends: 2371 [2021-05-21 20:24:06,912 INFO L226 Difference]: Without dead ends: 2172 [2021-05-21 20:24:06,912 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 [2021-05-21 20:24:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-05-21 20:24:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1262. [2021-05-21 20:24:06,940 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) [2021-05-21 20:24:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4903 transitions. [2021-05-21 20:24:06,942 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4903 transitions. Word has length 25 [2021-05-21 20:24:06,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:06,942 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4903 transitions. [2021-05-21 20:24:06,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:06,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4903 transitions. [2021-05-21 20:24:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:06,944 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:06,944 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:06,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable530 [2021-05-21 20:24:06,944 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]=== [2021-05-21 20:24:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:06,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1478470201, now seen corresponding path program 527 times [2021-05-21 20:24:06,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:06,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485048850] [2021-05-21 20:24:06,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:07,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:07,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485048850] [2021-05-21 20:24:07,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485048850] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:07,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:07,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:07,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032037680] [2021-05-21 20:24:07,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:07,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:07,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:07,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:07,019 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) [2021-05-21 20:24:07,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:07,084 INFO L93 Difference]: Finished difference Result 2511 states and 9124 transitions. [2021-05-21 20:24:07,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:07,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:07,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:07,089 INFO L225 Difference]: With dead ends: 2511 [2021-05-21 20:24:07,089 INFO L226 Difference]: Without dead ends: 2324 [2021-05-21 20:24:07,089 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 [2021-05-21 20:24:07,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2021-05-21 20:24:07,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 1286. [2021-05-21 20:24:07,118 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) [2021-05-21 20:24:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 4979 transitions. [2021-05-21 20:24:07,120 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 4979 transitions. Word has length 25 [2021-05-21 20:24:07,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:07,120 INFO L482 AbstractCegarLoop]: Abstraction has 1286 states and 4979 transitions. [2021-05-21 20:24:07,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:07,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 4979 transitions. [2021-05-21 20:24:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:07,122 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:07,122 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:07,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable531 [2021-05-21 20:24:07,122 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]=== [2021-05-21 20:24:07,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:07,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1271662235, now seen corresponding path program 528 times [2021-05-21 20:24:07,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:07,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560812363] [2021-05-21 20:24:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:07,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:07,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560812363] [2021-05-21 20:24:07,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560812363] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:07,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:07,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:07,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163136204] [2021-05-21 20:24:07,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:07,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:07,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:07,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:07,197 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) [2021-05-21 20:24:07,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:07,259 INFO L93 Difference]: Finished difference Result 2371 states and 8675 transitions. [2021-05-21 20:24:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:07,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:07,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:07,264 INFO L225 Difference]: With dead ends: 2371 [2021-05-21 20:24:07,264 INFO L226 Difference]: Without dead ends: 2156 [2021-05-21 20:24:07,264 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 [2021-05-21 20:24:07,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-05-21 20:24:07,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1246. [2021-05-21 20:24:07,292 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) [2021-05-21 20:24:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4861 transitions. [2021-05-21 20:24:07,294 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4861 transitions. Word has length 25 [2021-05-21 20:24:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:07,294 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4861 transitions. [2021-05-21 20:24:07,294 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) [2021-05-21 20:24:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4861 transitions. [2021-05-21 20:24:07,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:07,295 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:07,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:07,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable532 [2021-05-21 20:24:07,296 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]=== [2021-05-21 20:24:07,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:07,296 INFO L82 PathProgramCache]: Analyzing trace with hash -382263781, now seen corresponding path program 529 times [2021-05-21 20:24:07,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:07,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090006747] [2021-05-21 20:24:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:07,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:07,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090006747] [2021-05-21 20:24:07,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090006747] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:07,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:07,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:07,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439216889] [2021-05-21 20:24:07,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:07,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:07,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:07,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:07,396 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) [2021-05-21 20:24:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:07,451 INFO L93 Difference]: Finished difference Result 2475 states and 8984 transitions. [2021-05-21 20:24:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:07,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:07,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:07,455 INFO L225 Difference]: With dead ends: 2475 [2021-05-21 20:24:07,455 INFO L226 Difference]: Without dead ends: 2316 [2021-05-21 20:24:07,455 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 [2021-05-21 20:24:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2021-05-21 20:24:07,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1262. [2021-05-21 20:24:07,485 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) [2021-05-21 20:24:07,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4909 transitions. [2021-05-21 20:24:07,487 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4909 transitions. Word has length 25 [2021-05-21 20:24:07,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:07,487 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4909 transitions. [2021-05-21 20:24:07,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4909 transitions. [2021-05-21 20:24:07,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:07,489 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:07,489 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:07,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable533 [2021-05-21 20:24:07,489 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]=== [2021-05-21 20:24:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:07,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1972198531, now seen corresponding path program 530 times [2021-05-21 20:24:07,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:07,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736681401] [2021-05-21 20:24:07,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:07,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:07,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736681401] [2021-05-21 20:24:07,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736681401] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:07,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:07,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:07,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335862994] [2021-05-21 20:24:07,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:07,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:07,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:07,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:07,570 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) [2021-05-21 20:24:07,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:07,637 INFO L93 Difference]: Finished difference Result 2505 states and 9077 transitions. [2021-05-21 20:24:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:07,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:07,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:07,642 INFO L225 Difference]: With dead ends: 2505 [2021-05-21 20:24:07,642 INFO L226 Difference]: Without dead ends: 2300 [2021-05-21 20:24:07,642 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 [2021-05-21 20:24:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2021-05-21 20:24:07,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 1246. [2021-05-21 20:24:07,679 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) [2021-05-21 20:24:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4853 transitions. [2021-05-21 20:24:07,682 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4853 transitions. Word has length 25 [2021-05-21 20:24:07,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:07,682 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4853 transitions. [2021-05-21 20:24:07,682 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) [2021-05-21 20:24:07,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4853 transitions. [2021-05-21 20:24:07,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:07,683 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:07,683 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:07,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534 [2021-05-21 20:24:07,684 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]=== [2021-05-21 20:24:07,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:07,684 INFO L82 PathProgramCache]: Analyzing trace with hash -2070510053, now seen corresponding path program 531 times [2021-05-21 20:24:07,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:07,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305163788] [2021-05-21 20:24:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:07,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:07,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305163788] [2021-05-21 20:24:07,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305163788] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:07,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:07,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:07,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968356507] [2021-05-21 20:24:07,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:07,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:07,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:07,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:07,771 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) [2021-05-21 20:24:07,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:07,827 INFO L93 Difference]: Finished difference Result 2469 states and 8959 transitions. [2021-05-21 20:24:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:07,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:07,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:07,831 INFO L225 Difference]: With dead ends: 2469 [2021-05-21 20:24:07,831 INFO L226 Difference]: Without dead ends: 2310 [2021-05-21 20:24:07,831 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 [2021-05-21 20:24:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-05-21 20:24:07,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1262. [2021-05-21 20:24:07,860 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) [2021-05-21 20:24:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4901 transitions. [2021-05-21 20:24:07,862 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4901 transitions. Word has length 25 [2021-05-21 20:24:07,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:07,862 INFO L482 AbstractCegarLoop]: Abstraction has 1262 states and 4901 transitions. [2021-05-21 20:24:07,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:07,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4901 transitions. [2021-05-21 20:24:07,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:07,863 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:07,864 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:07,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable535 [2021-05-21 20:24:07,864 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]=== [2021-05-21 20:24:07,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:07,864 INFO L82 PathProgramCache]: Analyzing trace with hash -390013413, now seen corresponding path program 532 times [2021-05-21 20:24:07,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:07,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907111602] [2021-05-21 20:24:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:07,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:07,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907111602] [2021-05-21 20:24:07,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907111602] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:07,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:07,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:07,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516458921] [2021-05-21 20:24:07,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:07,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:07,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:07,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:07,947 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) [2021-05-21 20:24:08,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:08,016 INFO L93 Difference]: Finished difference Result 2493 states and 9035 transitions. [2021-05-21 20:24:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:08,016 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 [2021-05-21 20:24:08,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:08,020 INFO L225 Difference]: With dead ends: 2493 [2021-05-21 20:24:08,020 INFO L226 Difference]: Without dead ends: 2294 [2021-05-21 20:24:08,021 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 [2021-05-21 20:24:08,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2021-05-21 20:24:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1246. [2021-05-21 20:24:08,049 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) [2021-05-21 20:24:08,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4845 transitions. [2021-05-21 20:24:08,051 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4845 transitions. Word has length 25 [2021-05-21 20:24:08,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:08,051 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4845 transitions. [2021-05-21 20:24:08,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4845 transitions. [2021-05-21 20:24:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:08,053 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:08,053 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:08,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable536 [2021-05-21 20:24:08,053 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]=== [2021-05-21 20:24:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:08,053 INFO L82 PathProgramCache]: Analyzing trace with hash -653348099, now seen corresponding path program 533 times [2021-05-21 20:24:08,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:08,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827764285] [2021-05-21 20:24:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:08,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:08,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827764285] [2021-05-21 20:24:08,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827764285] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:08,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:08,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:08,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733123672] [2021-05-21 20:24:08,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:08,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:08,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:08,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:08,141 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) [2021-05-21 20:24:08,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:08,209 INFO L93 Difference]: Finished difference Result 2541 states and 9221 transitions. [2021-05-21 20:24:08,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:08,209 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 [2021-05-21 20:24:08,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:08,213 INFO L225 Difference]: With dead ends: 2541 [2021-05-21 20:24:08,213 INFO L226 Difference]: Without dead ends: 2352 [2021-05-21 20:24:08,213 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 [2021-05-21 20:24:08,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-05-21 20:24:08,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 1274. [2021-05-21 20:24:08,242 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) [2021-05-21 20:24:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4933 transitions. [2021-05-21 20:24:08,244 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4933 transitions. Word has length 25 [2021-05-21 20:24:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:08,244 INFO L482 AbstractCegarLoop]: Abstraction has 1274 states and 4933 transitions. [2021-05-21 20:24:08,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4933 transitions. [2021-05-21 20:24:08,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:08,246 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:08,246 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:08,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable537 [2021-05-21 20:24:08,246 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]=== [2021-05-21 20:24:08,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:08,246 INFO L82 PathProgramCache]: Analyzing trace with hash -2045492645, now seen corresponding path program 534 times [2021-05-21 20:24:08,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:08,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645387751] [2021-05-21 20:24:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:08,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:08,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645387751] [2021-05-21 20:24:08,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645387751] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:08,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:08,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:08,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47361403] [2021-05-21 20:24:08,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:08,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:08,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:08,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:08,331 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) [2021-05-21 20:24:08,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:08,401 INFO L93 Difference]: Finished difference Result 2535 states and 9176 transitions. [2021-05-21 20:24:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:08,401 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 [2021-05-21 20:24:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:08,405 INFO L225 Difference]: With dead ends: 2535 [2021-05-21 20:24:08,406 INFO L226 Difference]: Without dead ends: 2316 [2021-05-21 20:24:08,406 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 [2021-05-21 20:24:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2021-05-21 20:24:08,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1238. [2021-05-21 20:24:08,436 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) [2021-05-21 20:24:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4821 transitions. [2021-05-21 20:24:08,438 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4821 transitions. Word has length 25 [2021-05-21 20:24:08,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:08,438 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4821 transitions. [2021-05-21 20:24:08,438 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) [2021-05-21 20:24:08,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4821 transitions. [2021-05-21 20:24:08,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:08,440 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:08,440 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] [2021-05-21 20:24:08,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable538 [2021-05-21 20:24:08,440 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]=== [2021-05-21 20:24:08,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:08,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1889641977, now seen corresponding path program 535 times [2021-05-21 20:24:08,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:08,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25179948] [2021-05-21 20:24:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:08,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:08,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25179948] [2021-05-21 20:24:08,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25179948] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:08,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:08,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:08,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414236216] [2021-05-21 20:24:08,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:08,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:08,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:08,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:08,532 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) [2021-05-21 20:24:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:08,582 INFO L93 Difference]: Finished difference Result 2439 states and 8836 transitions. [2021-05-21 20:24:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:08,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:08,586 INFO L225 Difference]: With dead ends: 2439 [2021-05-21 20:24:08,587 INFO L226 Difference]: Without dead ends: 2280 [2021-05-21 20:24:08,587 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 [2021-05-21 20:24:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2021-05-21 20:24:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1238. [2021-05-21 20:24:08,615 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) [2021-05-21 20:24:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4805 transitions. [2021-05-21 20:24:08,617 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4805 transitions. Word has length 25 [2021-05-21 20:24:08,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:08,617 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4805 transitions. [2021-05-21 20:24:08,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:08,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4805 transitions. [2021-05-21 20:24:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:08,618 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:08,619 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:08,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable539 [2021-05-21 20:24:08,619 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]=== [2021-05-21 20:24:08,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:08,619 INFO L82 PathProgramCache]: Analyzing trace with hash 299707227, now seen corresponding path program 536 times [2021-05-21 20:24:08,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:08,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084172154] [2021-05-21 20:24:08,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:08,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:08,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084172154] [2021-05-21 20:24:08,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084172154] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:08,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:08,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:08,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65267145] [2021-05-21 20:24:08,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:08,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:08,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:08,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:08,708 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) [2021-05-21 20:24:08,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:08,777 INFO L93 Difference]: Finished difference Result 2469 states and 8929 transitions. [2021-05-21 20:24:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:08,777 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 [2021-05-21 20:24:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:08,781 INFO L225 Difference]: With dead ends: 2469 [2021-05-21 20:24:08,781 INFO L226 Difference]: Without dead ends: 2264 [2021-05-21 20:24:08,782 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2021-05-21 20:24:08,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1222. [2021-05-21 20:24:08,809 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) [2021-05-21 20:24:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4749 transitions. [2021-05-21 20:24:08,811 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4749 transitions. Word has length 25 [2021-05-21 20:24:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:08,811 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4749 transitions. [2021-05-21 20:24:08,811 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) [2021-05-21 20:24:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4749 transitions. [2021-05-21 20:24:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:08,813 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:08,813 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] [2021-05-21 20:24:08,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable540 [2021-05-21 20:24:08,813 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]=== [2021-05-21 20:24:08,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:08,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1035704805, now seen corresponding path program 537 times [2021-05-21 20:24:08,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:08,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132855528] [2021-05-21 20:24:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:08,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:08,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132855528] [2021-05-21 20:24:08,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132855528] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:08,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:08,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:08,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926555425] [2021-05-21 20:24:08,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:08,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:08,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:08,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:08,898 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) [2021-05-21 20:24:08,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:08,954 INFO L93 Difference]: Finished difference Result 2393 states and 8671 transitions. [2021-05-21 20:24:08,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:08,955 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 [2021-05-21 20:24:08,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:08,959 INFO L225 Difference]: With dead ends: 2393 [2021-05-21 20:24:08,959 INFO L226 Difference]: Without dead ends: 2234 [2021-05-21 20:24:08,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:08,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-05-21 20:24:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1238. [2021-05-21 20:24:08,986 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) [2021-05-21 20:24:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4797 transitions. [2021-05-21 20:24:08,988 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4797 transitions. Word has length 25 [2021-05-21 20:24:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:08,988 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4797 transitions. [2021-05-21 20:24:08,989 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) [2021-05-21 20:24:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4797 transitions. [2021-05-21 20:24:08,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:08,990 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:08,990 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:08,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable541 [2021-05-21 20:24:08,990 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]=== [2021-05-21 20:24:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:08,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1316990491, now seen corresponding path program 538 times [2021-05-21 20:24:08,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:08,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153228546] [2021-05-21 20:24:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:09,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:09,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153228546] [2021-05-21 20:24:09,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153228546] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:09,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:09,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:09,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991745311] [2021-05-21 20:24:09,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:09,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:09,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:09,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:09,077 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) [2021-05-21 20:24:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:09,148 INFO L93 Difference]: Finished difference Result 2281 states and 8334 transitions. [2021-05-21 20:24:09,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:09,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:09,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:09,152 INFO L225 Difference]: With dead ends: 2281 [2021-05-21 20:24:09,152 INFO L226 Difference]: Without dead ends: 2090 [2021-05-21 20:24:09,152 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 [2021-05-21 20:24:09,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-05-21 20:24:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1222. [2021-05-21 20:24:09,178 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) [2021-05-21 20:24:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4741 transitions. [2021-05-21 20:24:09,180 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4741 transitions. Word has length 25 [2021-05-21 20:24:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:09,180 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4741 transitions. [2021-05-21 20:24:09,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:09,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4741 transitions. [2021-05-21 20:24:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:09,182 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:09,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:09,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable542 [2021-05-21 20:24:09,182 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]=== [2021-05-21 20:24:09,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:09,182 INFO L82 PathProgramCache]: Analyzing trace with hash 381457149, now seen corresponding path program 539 times [2021-05-21 20:24:09,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:09,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313520753] [2021-05-21 20:24:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:09,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:09,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313520753] [2021-05-21 20:24:09,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313520753] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:09,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:09,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:09,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998337640] [2021-05-21 20:24:09,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:09,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:09,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:09,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:09,274 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) [2021-05-21 20:24:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:09,343 INFO L93 Difference]: Finished difference Result 2431 states and 8808 transitions. [2021-05-21 20:24:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:09,343 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 [2021-05-21 20:24:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:09,347 INFO L225 Difference]: With dead ends: 2431 [2021-05-21 20:24:09,347 INFO L226 Difference]: Without dead ends: 2242 [2021-05-21 20:24:09,347 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 [2021-05-21 20:24:09,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2021-05-21 20:24:09,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1246. [2021-05-21 20:24:09,374 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) [2021-05-21 20:24:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4817 transitions. [2021-05-21 20:24:09,376 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4817 transitions. Word has length 25 [2021-05-21 20:24:09,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:09,377 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4817 transitions. [2021-05-21 20:24:09,377 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) [2021-05-21 20:24:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4817 transitions. [2021-05-21 20:24:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:09,378 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:09,378 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] [2021-05-21 20:24:09,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable543 [2021-05-21 20:24:09,378 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]=== [2021-05-21 20:24:09,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:09,378 INFO L82 PathProgramCache]: Analyzing trace with hash -359494949, now seen corresponding path program 540 times [2021-05-21 20:24:09,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:09,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622114848] [2021-05-21 20:24:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:09,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:09,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622114848] [2021-05-21 20:24:09,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622114848] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:09,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:09,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:09,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512107888] [2021-05-21 20:24:09,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:09,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:09,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:09,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:09,472 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) [2021-05-21 20:24:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:09,543 INFO L93 Difference]: Finished difference Result 2289 states and 8354 transitions. [2021-05-21 20:24:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:09,543 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 [2021-05-21 20:24:09,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:09,547 INFO L225 Difference]: With dead ends: 2289 [2021-05-21 20:24:09,547 INFO L226 Difference]: Without dead ends: 2082 [2021-05-21 20:24:09,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:09,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-05-21 20:24:09,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1214. [2021-05-21 20:24:09,573 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) [2021-05-21 20:24:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 4717 transitions. [2021-05-21 20:24:09,575 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 4717 transitions. Word has length 25 [2021-05-21 20:24:09,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:09,575 INFO L482 AbstractCegarLoop]: Abstraction has 1214 states and 4717 transitions. [2021-05-21 20:24:09,575 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) [2021-05-21 20:24:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 4717 transitions. [2021-05-21 20:24:09,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:09,577 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:09,577 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] [2021-05-21 20:24:09,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable544 [2021-05-21 20:24:09,577 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]=== [2021-05-21 20:24:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:09,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1680548325, now seen corresponding path program 541 times [2021-05-21 20:24:09,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:09,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258861713] [2021-05-21 20:24:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:09,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:09,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258861713] [2021-05-21 20:24:09,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258861713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:09,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:09,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:09,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372280088] [2021-05-21 20:24:09,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:09,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:09,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:09,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:09,653 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) [2021-05-21 20:24:09,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:09,718 INFO L93 Difference]: Finished difference Result 2395 states and 8686 transitions. [2021-05-21 20:24:09,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:09,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:09,722 INFO L225 Difference]: With dead ends: 2395 [2021-05-21 20:24:09,722 INFO L226 Difference]: Without dead ends: 2236 [2021-05-21 20:24:09,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2021-05-21 20:24:09,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1238. [2021-05-21 20:24:09,749 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) [2021-05-21 20:24:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4801 transitions. [2021-05-21 20:24:09,751 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4801 transitions. Word has length 25 [2021-05-21 20:24:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:09,751 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4801 transitions. [2021-05-21 20:24:09,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:09,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4801 transitions. [2021-05-21 20:24:09,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:09,753 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:09,753 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:09,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable545 [2021-05-21 20:24:09,753 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]=== [2021-05-21 20:24:09,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:09,753 INFO L82 PathProgramCache]: Analyzing trace with hash -51685, now seen corresponding path program 542 times [2021-05-21 20:24:09,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:09,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909101411] [2021-05-21 20:24:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:09,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:09,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909101411] [2021-05-21 20:24:09,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909101411] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:09,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:09,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:09,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442536246] [2021-05-21 20:24:09,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:09,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:09,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:09,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:09,828 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) [2021-05-21 20:24:09,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:09,898 INFO L93 Difference]: Finished difference Result 2419 states and 8762 transitions. [2021-05-21 20:24:09,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:09,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:09,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:09,902 INFO L225 Difference]: With dead ends: 2419 [2021-05-21 20:24:09,902 INFO L226 Difference]: Without dead ends: 2220 [2021-05-21 20:24:09,902 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 [2021-05-21 20:24:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2021-05-21 20:24:09,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 1222. [2021-05-21 20:24:09,929 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) [2021-05-21 20:24:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4745 transitions. [2021-05-21 20:24:09,931 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4745 transitions. Word has length 25 [2021-05-21 20:24:09,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:09,931 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4745 transitions. [2021-05-21 20:24:09,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4745 transitions. [2021-05-21 20:24:09,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:09,933 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:09,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:09,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable546 [2021-05-21 20:24:09,933 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]=== [2021-05-21 20:24:09,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:09,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1767622009, now seen corresponding path program 543 times [2021-05-21 20:24:09,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:09,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637470988] [2021-05-21 20:24:09,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:10,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:10,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637470988] [2021-05-21 20:24:10,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637470988] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:10,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:10,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:10,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711237221] [2021-05-21 20:24:10,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:10,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:10,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:10,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:10,012 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) [2021-05-21 20:24:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:10,057 INFO L93 Difference]: Finished difference Result 2339 states and 8474 transitions. [2021-05-21 20:24:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:10,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:10,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:10,061 INFO L225 Difference]: With dead ends: 2339 [2021-05-21 20:24:10,062 INFO L226 Difference]: Without dead ends: 2180 [2021-05-21 20:24:10,062 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 [2021-05-21 20:24:10,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2021-05-21 20:24:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1238. [2021-05-21 20:24:10,089 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) [2021-05-21 20:24:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4793 transitions. [2021-05-21 20:24:10,091 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4793 transitions. Word has length 25 [2021-05-21 20:24:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:10,091 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4793 transitions. [2021-05-21 20:24:10,092 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) [2021-05-21 20:24:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4793 transitions. [2021-05-21 20:24:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:10,093 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:10,093 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] [2021-05-21 20:24:10,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable547 [2021-05-21 20:24:10,093 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]=== [2021-05-21 20:24:10,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:10,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1885006309, now seen corresponding path program 544 times [2021-05-21 20:24:10,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:10,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800026966] [2021-05-21 20:24:10,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:10,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:10,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800026966] [2021-05-21 20:24:10,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800026966] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:10,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:10,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:10,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174579378] [2021-05-21 20:24:10,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:10,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:10,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:10,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:10,169 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) [2021-05-21 20:24:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:10,227 INFO L93 Difference]: Finished difference Result 2227 states and 8137 transitions. [2021-05-21 20:24:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:10,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:10,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:10,231 INFO L225 Difference]: With dead ends: 2227 [2021-05-21 20:24:10,231 INFO L226 Difference]: Without dead ends: 2036 [2021-05-21 20:24:10,231 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 [2021-05-21 20:24:10,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2021-05-21 20:24:10,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1222. [2021-05-21 20:24:10,257 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) [2021-05-21 20:24:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4737 transitions. [2021-05-21 20:24:10,259 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4737 transitions. Word has length 25 [2021-05-21 20:24:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:10,259 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4737 transitions. [2021-05-21 20:24:10,259 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) [2021-05-21 20:24:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4737 transitions. [2021-05-21 20:24:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:10,261 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:10,261 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:10,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable548 [2021-05-21 20:24:10,261 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]=== [2021-05-21 20:24:10,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:10,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1787330075, now seen corresponding path program 545 times [2021-05-21 20:24:10,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:10,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805798647] [2021-05-21 20:24:10,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:10,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:10,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805798647] [2021-05-21 20:24:10,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805798647] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:10,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:10,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:10,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468263793] [2021-05-21 20:24:10,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:10,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:10,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:10,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:10,336 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) [2021-05-21 20:24:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:10,399 INFO L93 Difference]: Finished difference Result 2243 states and 8209 transitions. [2021-05-21 20:24:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:10,399 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 [2021-05-21 20:24:10,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:10,403 INFO L225 Difference]: With dead ends: 2243 [2021-05-21 20:24:10,403 INFO L226 Difference]: Without dead ends: 2060 [2021-05-21 20:24:10,403 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 [2021-05-21 20:24:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2021-05-21 20:24:10,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1246. [2021-05-21 20:24:10,429 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) [2021-05-21 20:24:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4813 transitions. [2021-05-21 20:24:10,431 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4813 transitions. Word has length 25 [2021-05-21 20:24:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:10,431 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4813 transitions. [2021-05-21 20:24:10,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4813 transitions. [2021-05-21 20:24:10,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:10,433 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:10,433 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] [2021-05-21 20:24:10,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable549 [2021-05-21 20:24:10,433 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]=== [2021-05-21 20:24:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:10,433 INFO L82 PathProgramCache]: Analyzing trace with hash -256006919, now seen corresponding path program 546 times [2021-05-21 20:24:10,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:10,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73746293] [2021-05-21 20:24:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:10,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:10,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73746293] [2021-05-21 20:24:10,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73746293] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:10,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:10,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:10,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102025343] [2021-05-21 20:24:10,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:10,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:10,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:10,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:10,513 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) [2021-05-21 20:24:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:10,570 INFO L93 Difference]: Finished difference Result 2059 states and 7596 transitions. [2021-05-21 20:24:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:10,573 INFO L225 Difference]: With dead ends: 2059 [2021-05-21 20:24:10,573 INFO L226 Difference]: Without dead ends: 1852 [2021-05-21 20:24:10,574 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 [2021-05-21 20:24:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2021-05-21 20:24:10,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1214. [2021-05-21 20:24:10,598 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) [2021-05-21 20:24:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 4713 transitions. [2021-05-21 20:24:10,600 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 4713 transitions. Word has length 25 [2021-05-21 20:24:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:10,601 INFO L482 AbstractCegarLoop]: Abstraction has 1214 states and 4713 transitions. [2021-05-21 20:24:10,601 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) [2021-05-21 20:24:10,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 4713 transitions. [2021-05-21 20:24:10,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:10,602 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:10,602 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] [2021-05-21 20:24:10,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable550 [2021-05-21 20:24:10,602 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]=== [2021-05-21 20:24:10,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:10,602 INFO L82 PathProgramCache]: Analyzing trace with hash -956444035, now seen corresponding path program 547 times [2021-05-21 20:24:10,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:10,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378975917] [2021-05-21 20:24:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:10,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:10,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378975917] [2021-05-21 20:24:10,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378975917] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:10,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:10,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:10,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620619161] [2021-05-21 20:24:10,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:10,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:10,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:10,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:10,676 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) [2021-05-21 20:24:10,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:10,736 INFO L93 Difference]: Finished difference Result 2479 states and 9008 transitions. [2021-05-21 20:24:10,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:10,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:10,740 INFO L225 Difference]: With dead ends: 2479 [2021-05-21 20:24:10,740 INFO L226 Difference]: Without dead ends: 2290 [2021-05-21 20:24:10,740 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 [2021-05-21 20:24:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2021-05-21 20:24:10,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 1254. [2021-05-21 20:24:10,768 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) [2021-05-21 20:24:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 4857 transitions. [2021-05-21 20:24:10,770 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 4857 transitions. Word has length 25 [2021-05-21 20:24:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:10,770 INFO L482 AbstractCegarLoop]: Abstraction has 1254 states and 4857 transitions. [2021-05-21 20:24:10,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 4857 transitions. [2021-05-21 20:24:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:10,772 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:10,772 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:10,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable551 [2021-05-21 20:24:10,772 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]=== [2021-05-21 20:24:10,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:10,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1946378715, now seen corresponding path program 548 times [2021-05-21 20:24:10,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:10,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941085983] [2021-05-21 20:24:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:10,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:10,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941085983] [2021-05-21 20:24:10,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941085983] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:10,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:10,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:10,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551463014] [2021-05-21 20:24:10,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:10,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:10,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:10,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:10,846 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) [2021-05-21 20:24:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:10,903 INFO L93 Difference]: Finished difference Result 2473 states and 8963 transitions. [2021-05-21 20:24:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:10,903 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 [2021-05-21 20:24:10,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:10,907 INFO L225 Difference]: With dead ends: 2473 [2021-05-21 20:24:10,907 INFO L226 Difference]: Without dead ends: 2262 [2021-05-21 20:24:10,907 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 [2021-05-21 20:24:10,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-05-21 20:24:10,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1226. [2021-05-21 20:24:10,934 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) [2021-05-21 20:24:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4757 transitions. [2021-05-21 20:24:10,936 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4757 transitions. Word has length 25 [2021-05-21 20:24:10,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:10,936 INFO L482 AbstractCegarLoop]: Abstraction has 1226 states and 4757 transitions. [2021-05-21 20:24:10,936 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) [2021-05-21 20:24:10,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4757 transitions. [2021-05-21 20:24:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:10,937 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:10,937 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:10,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable552 [2021-05-21 20:24:10,937 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]=== [2021-05-21 20:24:10,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:10,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1803240997, now seen corresponding path program 549 times [2021-05-21 20:24:10,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:10,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492350491] [2021-05-21 20:24:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:11,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:11,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492350491] [2021-05-21 20:24:11,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492350491] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:11,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:11,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:11,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151808350] [2021-05-21 20:24:11,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:11,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:11,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:11,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:11,021 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) [2021-05-21 20:24:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:11,079 INFO L93 Difference]: Finished difference Result 2381 states and 8631 transitions. [2021-05-21 20:24:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:11,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:11,084 INFO L225 Difference]: With dead ends: 2381 [2021-05-21 20:24:11,084 INFO L226 Difference]: Without dead ends: 2192 [2021-05-21 20:24:11,084 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 [2021-05-21 20:24:11,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2021-05-21 20:24:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 1250. [2021-05-21 20:24:11,111 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) [2021-05-21 20:24:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4833 transitions. [2021-05-21 20:24:11,113 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4833 transitions. Word has length 25 [2021-05-21 20:24:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:11,113 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4833 transitions. [2021-05-21 20:24:11,113 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) [2021-05-21 20:24:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4833 transitions. [2021-05-21 20:24:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:11,114 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:11,114 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:11,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable553 [2021-05-21 20:24:11,114 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]=== [2021-05-21 20:24:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:11,115 INFO L82 PathProgramCache]: Analyzing trace with hash 40417883, now seen corresponding path program 550 times [2021-05-21 20:24:11,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:11,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637883073] [2021-05-21 20:24:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:11,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:11,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637883073] [2021-05-21 20:24:11,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637883073] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:11,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:11,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:11,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267632518] [2021-05-21 20:24:11,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:11,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:11,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:11,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:11,201 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) [2021-05-21 20:24:11,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:11,263 INFO L93 Difference]: Finished difference Result 2239 states and 8177 transitions. [2021-05-21 20:24:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:11,263 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 [2021-05-21 20:24:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:11,267 INFO L225 Difference]: With dead ends: 2239 [2021-05-21 20:24:11,267 INFO L226 Difference]: Without dead ends: 2040 [2021-05-21 20:24:11,267 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 [2021-05-21 20:24:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-05-21 20:24:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1226. [2021-05-21 20:24:11,294 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) [2021-05-21 20:24:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4745 transitions. [2021-05-21 20:24:11,296 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4745 transitions. Word has length 25 [2021-05-21 20:24:11,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:11,296 INFO L482 AbstractCegarLoop]: Abstraction has 1226 states and 4745 transitions. [2021-05-21 20:24:11,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:11,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4745 transitions. [2021-05-21 20:24:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:11,298 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:11,298 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:11,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable554 [2021-05-21 20:24:11,298 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]=== [2021-05-21 20:24:11,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:11,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1438983623, now seen corresponding path program 551 times [2021-05-21 20:24:11,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:11,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650825691] [2021-05-21 20:24:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:11,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:11,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650825691] [2021-05-21 20:24:11,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650825691] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:11,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:11,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:11,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068942165] [2021-05-21 20:24:11,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:11,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:11,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:11,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:11,373 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) [2021-05-21 20:24:11,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:11,429 INFO L93 Difference]: Finished difference Result 2247 states and 8217 transitions. [2021-05-21 20:24:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:11,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:11,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:11,432 INFO L225 Difference]: With dead ends: 2247 [2021-05-21 20:24:11,433 INFO L226 Difference]: Without dead ends: 2064 [2021-05-21 20:24:11,433 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 [2021-05-21 20:24:11,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2021-05-21 20:24:11,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1250. [2021-05-21 20:24:11,459 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) [2021-05-21 20:24:11,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4821 transitions. [2021-05-21 20:24:11,461 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4821 transitions. Word has length 25 [2021-05-21 20:24:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:11,461 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4821 transitions. [2021-05-21 20:24:11,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4821 transitions. [2021-05-21 20:24:11,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:11,462 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:11,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:11,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable555 [2021-05-21 20:24:11,463 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]=== [2021-05-21 20:24:11,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash -357920997, now seen corresponding path program 552 times [2021-05-21 20:24:11,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:11,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821823210] [2021-05-21 20:24:11,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:11,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:11,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821823210] [2021-05-21 20:24:11,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821823210] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:11,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:11,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:11,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075516505] [2021-05-21 20:24:11,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:11,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:11,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:11,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:11,538 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) [2021-05-21 20:24:11,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:11,593 INFO L93 Difference]: Finished difference Result 2063 states and 7604 transitions. [2021-05-21 20:24:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:11,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:11,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:11,597 INFO L225 Difference]: With dead ends: 2063 [2021-05-21 20:24:11,597 INFO L226 Difference]: Without dead ends: 1848 [2021-05-21 20:24:11,597 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 [2021-05-21 20:24:11,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2021-05-21 20:24:11,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1210. [2021-05-21 20:24:11,621 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) [2021-05-21 20:24:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4703 transitions. [2021-05-21 20:24:11,623 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4703 transitions. Word has length 25 [2021-05-21 20:24:11,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:11,623 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4703 transitions. [2021-05-21 20:24:11,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:11,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4703 transitions. [2021-05-21 20:24:11,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:11,625 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:11,625 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:11,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable556 [2021-05-21 20:24:11,625 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]=== [2021-05-21 20:24:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:11,625 INFO L82 PathProgramCache]: Analyzing trace with hash -302743043, now seen corresponding path program 553 times [2021-05-21 20:24:11,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:11,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634615463] [2021-05-21 20:24:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:11,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:11,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634615463] [2021-05-21 20:24:11,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634615463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:11,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:11,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:11,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434743120] [2021-05-21 20:24:11,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:11,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:11,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:11,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:11,736 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) [2021-05-21 20:24:11,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:11,785 INFO L93 Difference]: Finished difference Result 2385 states and 8635 transitions. [2021-05-21 20:24:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:11,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:11,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:11,789 INFO L225 Difference]: With dead ends: 2385 [2021-05-21 20:24:11,789 INFO L226 Difference]: Without dead ends: 2226 [2021-05-21 20:24:11,789 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 [2021-05-21 20:24:11,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2021-05-21 20:24:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1226. [2021-05-21 20:24:11,816 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) [2021-05-21 20:24:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4751 transitions. [2021-05-21 20:24:11,818 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4751 transitions. Word has length 25 [2021-05-21 20:24:11,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:11,818 INFO L482 AbstractCegarLoop]: Abstraction has 1226 states and 4751 transitions. [2021-05-21 20:24:11,818 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) [2021-05-21 20:24:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4751 transitions. [2021-05-21 20:24:11,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:11,820 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:11,820 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] [2021-05-21 20:24:11,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable557 [2021-05-21 20:24:11,820 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]=== [2021-05-21 20:24:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:11,820 INFO L82 PathProgramCache]: Analyzing trace with hash 705554941, now seen corresponding path program 554 times [2021-05-21 20:24:11,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:11,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292102302] [2021-05-21 20:24:11,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:11,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:11,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292102302] [2021-05-21 20:24:11,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292102302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:11,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:11,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:11,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057763396] [2021-05-21 20:24:11,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:11,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:11,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:11,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:11,905 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) [2021-05-21 20:24:11,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:11,962 INFO L93 Difference]: Finished difference Result 2413 states and 8723 transitions. [2021-05-21 20:24:11,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:11,962 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 [2021-05-21 20:24:11,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:11,966 INFO L225 Difference]: With dead ends: 2413 [2021-05-21 20:24:11,966 INFO L226 Difference]: Without dead ends: 2210 [2021-05-21 20:24:11,966 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 [2021-05-21 20:24:11,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2021-05-21 20:24:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 1210. [2021-05-21 20:24:11,992 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) [2021-05-21 20:24:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4695 transitions. [2021-05-21 20:24:11,994 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4695 transitions. Word has length 25 [2021-05-21 20:24:11,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:11,994 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4695 transitions. [2021-05-21 20:24:11,994 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) [2021-05-21 20:24:11,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4695 transitions. [2021-05-21 20:24:11,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:11,996 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:11,996 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] [2021-05-21 20:24:11,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable558 [2021-05-21 20:24:11,996 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]=== [2021-05-21 20:24:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:11,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1149540005, now seen corresponding path program 555 times [2021-05-21 20:24:11,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:11,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657496404] [2021-05-21 20:24:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:12,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:12,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657496404] [2021-05-21 20:24:12,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657496404] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:12,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:12,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:12,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224099110] [2021-05-21 20:24:12,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:12,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:12,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:12,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:12,072 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) [2021-05-21 20:24:12,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:12,115 INFO L93 Difference]: Finished difference Result 2381 states and 8615 transitions. [2021-05-21 20:24:12,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:12,119 INFO L225 Difference]: With dead ends: 2381 [2021-05-21 20:24:12,119 INFO L226 Difference]: Without dead ends: 2222 [2021-05-21 20:24:12,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:12,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-05-21 20:24:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1226. [2021-05-21 20:24:12,146 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) [2021-05-21 20:24:12,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4743 transitions. [2021-05-21 20:24:12,148 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4743 transitions. Word has length 25 [2021-05-21 20:24:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:12,148 INFO L482 AbstractCegarLoop]: Abstraction has 1226 states and 4743 transitions. [2021-05-21 20:24:12,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4743 transitions. [2021-05-21 20:24:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:12,149 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:12,150 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:12,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable559 [2021-05-21 20:24:12,150 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]=== [2021-05-21 20:24:12,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:12,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1179399683, now seen corresponding path program 556 times [2021-05-21 20:24:12,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:12,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155473469] [2021-05-21 20:24:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:12,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:12,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155473469] [2021-05-21 20:24:12,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155473469] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:12,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:12,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:12,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850858775] [2021-05-21 20:24:12,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:12,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:12,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:12,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:12,225 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) [2021-05-21 20:24:12,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:12,285 INFO L93 Difference]: Finished difference Result 2405 states and 8691 transitions. [2021-05-21 20:24:12,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:12,285 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 [2021-05-21 20:24:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:12,289 INFO L225 Difference]: With dead ends: 2405 [2021-05-21 20:24:12,289 INFO L226 Difference]: Without dead ends: 2206 [2021-05-21 20:24:12,289 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 [2021-05-21 20:24:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-05-21 20:24:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1210. [2021-05-21 20:24:12,315 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) [2021-05-21 20:24:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4687 transitions. [2021-05-21 20:24:12,317 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4687 transitions. Word has length 25 [2021-05-21 20:24:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:12,318 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4687 transitions. [2021-05-21 20:24:12,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4687 transitions. [2021-05-21 20:24:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:12,319 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:12,319 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:12,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable560 [2021-05-21 20:24:12,319 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]=== [2021-05-21 20:24:12,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:12,319 INFO L82 PathProgramCache]: Analyzing trace with hash 755122685, now seen corresponding path program 557 times [2021-05-21 20:24:12,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:12,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709674958] [2021-05-21 20:24:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:12,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:12,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709674958] [2021-05-21 20:24:12,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709674958] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:12,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:12,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:12,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136584795] [2021-05-21 20:24:12,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:12,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:12,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:12,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:12,395 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) [2021-05-21 20:24:12,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:12,452 INFO L93 Difference]: Finished difference Result 2449 states and 8867 transitions. [2021-05-21 20:24:12,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:12,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:12,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:12,456 INFO L225 Difference]: With dead ends: 2449 [2021-05-21 20:24:12,456 INFO L226 Difference]: Without dead ends: 2262 [2021-05-21 20:24:12,456 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 [2021-05-21 20:24:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-05-21 20:24:12,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1238. [2021-05-21 20:24:12,483 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) [2021-05-21 20:24:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4775 transitions. [2021-05-21 20:24:12,486 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4775 transitions. Word has length 25 [2021-05-21 20:24:12,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:12,486 INFO L482 AbstractCegarLoop]: Abstraction has 1238 states and 4775 transitions. [2021-05-21 20:24:12,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:12,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4775 transitions. [2021-05-21 20:24:12,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:12,487 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:12,487 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] [2021-05-21 20:24:12,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable561 [2021-05-21 20:24:12,487 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]=== [2021-05-21 20:24:12,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:12,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1288214309, now seen corresponding path program 558 times [2021-05-21 20:24:12,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:12,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223813158] [2021-05-21 20:24:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:12,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:12,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223813158] [2021-05-21 20:24:12,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223813158] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:12,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:12,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:12,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116320943] [2021-05-21 20:24:12,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:12,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:12,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:12,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:12,563 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) [2021-05-21 20:24:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:12,622 INFO L93 Difference]: Finished difference Result 2445 states and 8827 transitions. [2021-05-21 20:24:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:12,623 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 [2021-05-21 20:24:12,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:12,627 INFO L225 Difference]: With dead ends: 2445 [2021-05-21 20:24:12,627 INFO L226 Difference]: Without dead ends: 2226 [2021-05-21 20:24:12,627 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 [2021-05-21 20:24:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2021-05-21 20:24:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1202. [2021-05-21 20:24:12,654 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) [2021-05-21 20:24:12,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4663 transitions. [2021-05-21 20:24:12,656 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 4663 transitions. Word has length 25 [2021-05-21 20:24:12,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:12,656 INFO L482 AbstractCegarLoop]: Abstraction has 1202 states and 4663 transitions. [2021-05-21 20:24:12,656 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) [2021-05-21 20:24:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 4663 transitions. [2021-05-21 20:24:12,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:12,657 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:12,657 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:12,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable562 [2021-05-21 20:24:12,657 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]=== [2021-05-21 20:24:12,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:12,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1969162715, now seen corresponding path program 559 times [2021-05-21 20:24:12,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:12,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178545346] [2021-05-21 20:24:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:12,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:12,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178545346] [2021-05-21 20:24:12,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178545346] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:12,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:12,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:12,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803804650] [2021-05-21 20:24:12,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:12,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:12,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:12,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:12,741 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) [2021-05-21 20:24:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:12,786 INFO L93 Difference]: Finished difference Result 2349 states and 8487 transitions. [2021-05-21 20:24:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:12,787 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 [2021-05-21 20:24:12,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:12,790 INFO L225 Difference]: With dead ends: 2349 [2021-05-21 20:24:12,791 INFO L226 Difference]: Without dead ends: 2190 [2021-05-21 20:24:12,791 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2021-05-21 20:24:12,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1202. [2021-05-21 20:24:12,817 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) [2021-05-21 20:24:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4647 transitions. [2021-05-21 20:24:12,819 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 4647 transitions. Word has length 25 [2021-05-21 20:24:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:12,819 INFO L482 AbstractCegarLoop]: Abstraction has 1202 states and 4647 transitions. [2021-05-21 20:24:12,819 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) [2021-05-21 20:24:12,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 4647 transitions. [2021-05-21 20:24:12,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:12,820 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:12,820 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] [2021-05-21 20:24:12,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable563 [2021-05-21 20:24:12,821 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]=== [2021-05-21 20:24:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:12,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1317506597, now seen corresponding path program 560 times [2021-05-21 20:24:12,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:12,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056093678] [2021-05-21 20:24:12,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:12,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:12,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056093678] [2021-05-21 20:24:12,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056093678] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:12,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:12,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:12,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171589682] [2021-05-21 20:24:12,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:12,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:12,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:12,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:12,906 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) [2021-05-21 20:24:12,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:12,966 INFO L93 Difference]: Finished difference Result 2377 states and 8575 transitions. [2021-05-21 20:24:12,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:12,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:12,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:12,970 INFO L225 Difference]: With dead ends: 2377 [2021-05-21 20:24:12,970 INFO L226 Difference]: Without dead ends: 2174 [2021-05-21 20:24:12,970 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2021-05-21 20:24:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 1186. [2021-05-21 20:24:12,996 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) [2021-05-21 20:24:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 4591 transitions. [2021-05-21 20:24:12,998 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 4591 transitions. Word has length 25 [2021-05-21 20:24:12,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:12,998 INFO L482 AbstractCegarLoop]: Abstraction has 1186 states and 4591 transitions. [2021-05-21 20:24:12,998 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) [2021-05-21 20:24:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 4591 transitions. [2021-05-21 20:24:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:12,999 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:12,999 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] [2021-05-21 20:24:12,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable564 [2021-05-21 20:24:12,999 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]=== [2021-05-21 20:24:13,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:13,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1173135835, now seen corresponding path program 561 times [2021-05-21 20:24:13,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:13,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055053414] [2021-05-21 20:24:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:13,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:13,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:13,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055053414] [2021-05-21 20:24:13,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055053414] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:13,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:13,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:13,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392214626] [2021-05-21 20:24:13,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:13,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:13,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:13,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:13,077 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) [2021-05-21 20:24:13,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:13,122 INFO L93 Difference]: Finished difference Result 2305 states and 8327 transitions. [2021-05-21 20:24:13,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:13,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:13,126 INFO L225 Difference]: With dead ends: 2305 [2021-05-21 20:24:13,126 INFO L226 Difference]: Without dead ends: 2146 [2021-05-21 20:24:13,126 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 [2021-05-21 20:24:13,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2021-05-21 20:24:13,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1202. [2021-05-21 20:24:13,151 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) [2021-05-21 20:24:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4639 transitions. [2021-05-21 20:24:13,153 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 4639 transitions. Word has length 25 [2021-05-21 20:24:13,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:13,153 INFO L482 AbstractCegarLoop]: Abstraction has 1202 states and 4639 transitions. [2021-05-21 20:24:13,153 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) [2021-05-21 20:24:13,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 4639 transitions. [2021-05-21 20:24:13,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:13,155 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:13,155 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] [2021-05-21 20:24:13,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable565 [2021-05-21 20:24:13,155 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]=== [2021-05-21 20:24:13,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:13,155 INFO L82 PathProgramCache]: Analyzing trace with hash 527604221, now seen corresponding path program 562 times [2021-05-21 20:24:13,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:13,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155553015] [2021-05-21 20:24:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:13,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:13,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155553015] [2021-05-21 20:24:13,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155553015] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:13,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:13,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:13,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734125053] [2021-05-21 20:24:13,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:13,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:13,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:13,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:13,231 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) [2021-05-21 20:24:13,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:13,290 INFO L93 Difference]: Finished difference Result 2193 states and 7990 transitions. [2021-05-21 20:24:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:13,290 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 [2021-05-21 20:24:13,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:13,294 INFO L225 Difference]: With dead ends: 2193 [2021-05-21 20:24:13,294 INFO L226 Difference]: Without dead ends: 2002 [2021-05-21 20:24:13,294 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 [2021-05-21 20:24:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2021-05-21 20:24:13,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1186. [2021-05-21 20:24:13,318 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) [2021-05-21 20:24:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 4583 transitions. [2021-05-21 20:24:13,320 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 4583 transitions. Word has length 25 [2021-05-21 20:24:13,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:13,320 INFO L482 AbstractCegarLoop]: Abstraction has 1186 states and 4583 transitions. [2021-05-21 20:24:13,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:13,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 4583 transitions. [2021-05-21 20:24:13,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:13,322 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:13,322 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:13,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable566 [2021-05-21 20:24:13,322 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]=== [2021-05-21 20:24:13,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:13,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1789927933, now seen corresponding path program 563 times [2021-05-21 20:24:13,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:13,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638342806] [2021-05-21 20:24:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:13,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:13,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638342806] [2021-05-21 20:24:13,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638342806] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:13,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:13,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:13,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788825836] [2021-05-21 20:24:13,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:13,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:13,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:13,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:13,398 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) [2021-05-21 20:24:13,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:13,456 INFO L93 Difference]: Finished difference Result 2341 states and 8459 transitions. [2021-05-21 20:24:13,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:13,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:13,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:13,460 INFO L225 Difference]: With dead ends: 2341 [2021-05-21 20:24:13,460 INFO L226 Difference]: Without dead ends: 2154 [2021-05-21 20:24:13,460 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 [2021-05-21 20:24:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2021-05-21 20:24:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1210. [2021-05-21 20:24:13,486 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) [2021-05-21 20:24:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4659 transitions. [2021-05-21 20:24:13,488 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4659 transitions. Word has length 25 [2021-05-21 20:24:13,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:13,488 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4659 transitions. [2021-05-21 20:24:13,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4659 transitions. [2021-05-21 20:24:13,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:13,490 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:13,490 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:13,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567 [2021-05-21 20:24:13,490 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]=== [2021-05-21 20:24:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:13,490 INFO L82 PathProgramCache]: Analyzing trace with hash 397783387, now seen corresponding path program 564 times [2021-05-21 20:24:13,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:13,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767906493] [2021-05-21 20:24:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:13,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:13,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767906493] [2021-05-21 20:24:13,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767906493] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:13,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:13,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:13,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684555482] [2021-05-21 20:24:13,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:13,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:13,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:13,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:13,565 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) [2021-05-21 20:24:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:13,633 INFO L93 Difference]: Finished difference Result 2201 states and 8010 transitions. [2021-05-21 20:24:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:13,633 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 [2021-05-21 20:24:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:13,637 INFO L225 Difference]: With dead ends: 2201 [2021-05-21 20:24:13,637 INFO L226 Difference]: Without dead ends: 1994 [2021-05-21 20:24:13,637 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 [2021-05-21 20:24:13,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2021-05-21 20:24:13,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1178. [2021-05-21 20:24:13,661 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) [2021-05-21 20:24:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 4559 transitions. [2021-05-21 20:24:13,663 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 4559 transitions. Word has length 25 [2021-05-21 20:24:13,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:13,664 INFO L482 AbstractCegarLoop]: Abstraction has 1178 states and 4559 transitions. [2021-05-21 20:24:13,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:13,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 4559 transitions. [2021-05-21 20:24:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:13,665 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:13,665 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:13,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable568 [2021-05-21 20:24:13,665 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]=== [2021-05-21 20:24:13,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:13,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1112414649, now seen corresponding path program 565 times [2021-05-21 20:24:13,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:13,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521466267] [2021-05-21 20:24:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:13,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:13,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521466267] [2021-05-21 20:24:13,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521466267] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:13,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:13,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:13,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935327405] [2021-05-21 20:24:13,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:13,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:13,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:13,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:13,741 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) [2021-05-21 20:24:13,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:13,786 INFO L93 Difference]: Finished difference Result 2285 states and 8247 transitions. [2021-05-21 20:24:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:13,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:13,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:13,790 INFO L225 Difference]: With dead ends: 2285 [2021-05-21 20:24:13,790 INFO L226 Difference]: Without dead ends: 2126 [2021-05-21 20:24:13,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-05-21 20:24:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1178. [2021-05-21 20:24:13,816 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) [2021-05-21 20:24:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 4543 transitions. [2021-05-21 20:24:13,818 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 4543 transitions. Word has length 25 [2021-05-21 20:24:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:13,818 INFO L482 AbstractCegarLoop]: Abstraction has 1178 states and 4543 transitions. [2021-05-21 20:24:13,818 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) [2021-05-21 20:24:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 4543 transitions. [2021-05-21 20:24:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:13,819 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:13,819 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] [2021-05-21 20:24:13,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable569 [2021-05-21 20:24:13,819 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]=== [2021-05-21 20:24:13,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:13,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1082554971, now seen corresponding path program 566 times [2021-05-21 20:24:13,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:13,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310903346] [2021-05-21 20:24:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:13,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:13,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310903346] [2021-05-21 20:24:13,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310903346] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:13,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:13,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:13,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295689609] [2021-05-21 20:24:13,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:13,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:13,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:13,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:13,894 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) [2021-05-21 20:24:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:13,952 INFO L93 Difference]: Finished difference Result 2309 states and 8323 transitions. [2021-05-21 20:24:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:13,953 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 [2021-05-21 20:24:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:13,956 INFO L225 Difference]: With dead ends: 2309 [2021-05-21 20:24:13,957 INFO L226 Difference]: Without dead ends: 2110 [2021-05-21 20:24:13,957 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 [2021-05-21 20:24:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2021-05-21 20:24:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1162. [2021-05-21 20:24:13,981 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) [2021-05-21 20:24:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 4487 transitions. [2021-05-21 20:24:13,983 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 4487 transitions. Word has length 25 [2021-05-21 20:24:13,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:13,983 INFO L482 AbstractCegarLoop]: Abstraction has 1162 states and 4487 transitions. [2021-05-21 20:24:13,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:13,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 4487 transitions. [2021-05-21 20:24:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:13,985 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:13,985 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:13,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable570 [2021-05-21 20:24:13,985 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]=== [2021-05-21 20:24:13,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:13,985 INFO L82 PathProgramCache]: Analyzing trace with hash 631512603, now seen corresponding path program 567 times [2021-05-21 20:24:13,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:13,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265915973] [2021-05-21 20:24:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:14,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:14,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265915973] [2021-05-21 20:24:14,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265915973] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:14,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:14,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:14,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422779506] [2021-05-21 20:24:14,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:14,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:14,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:14,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:14,062 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) [2021-05-21 20:24:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:14,112 INFO L93 Difference]: Finished difference Result 2229 states and 8035 transitions. [2021-05-21 20:24:14,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:14,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:14,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:14,116 INFO L225 Difference]: With dead ends: 2229 [2021-05-21 20:24:14,116 INFO L226 Difference]: Without dead ends: 2070 [2021-05-21 20:24:14,116 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 [2021-05-21 20:24:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-05-21 20:24:14,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1130. [2021-05-21 20:24:14,140 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) [2021-05-21 20:24:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 4359 transitions. [2021-05-21 20:24:14,141 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 4359 transitions. Word has length 25 [2021-05-21 20:24:14,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:14,142 INFO L482 AbstractCegarLoop]: Abstraction has 1130 states and 4359 transitions. [2021-05-21 20:24:14,142 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) [2021-05-21 20:24:14,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 4359 transitions. [2021-05-21 20:24:14,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:14,143 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:14,143 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:14,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable571 [2021-05-21 20:24:14,143 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]=== [2021-05-21 20:24:14,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:14,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1495457317, now seen corresponding path program 568 times [2021-05-21 20:24:14,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:14,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068593368] [2021-05-21 20:24:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:14,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:14,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068593368] [2021-05-21 20:24:14,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068593368] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:14,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:14,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:14,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119468541] [2021-05-21 20:24:14,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:14,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:14,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:14,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:14,220 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) [2021-05-21 20:24:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:14,279 INFO L93 Difference]: Finished difference Result 2117 states and 7698 transitions. [2021-05-21 20:24:14,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:14,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:14,282 INFO L225 Difference]: With dead ends: 2117 [2021-05-21 20:24:14,282 INFO L226 Difference]: Without dead ends: 1926 [2021-05-21 20:24:14,282 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 [2021-05-21 20:24:14,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-05-21 20:24:14,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1114. [2021-05-21 20:24:14,304 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) [2021-05-21 20:24:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4303 transitions. [2021-05-21 20:24:14,306 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4303 transitions. Word has length 25 [2021-05-21 20:24:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:14,306 INFO L482 AbstractCegarLoop]: Abstraction has 1114 states and 4303 transitions. [2021-05-21 20:24:14,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4303 transitions. [2021-05-21 20:24:14,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:14,308 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:14,308 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] [2021-05-21 20:24:14,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable572 [2021-05-21 20:24:14,308 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]=== [2021-05-21 20:24:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:14,308 INFO L82 PathProgramCache]: Analyzing trace with hash -798035459, now seen corresponding path program 569 times [2021-05-21 20:24:14,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:14,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783040877] [2021-05-21 20:24:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:14,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:14,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783040877] [2021-05-21 20:24:14,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783040877] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:14,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:14,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:14,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803785222] [2021-05-21 20:24:14,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:14,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:14,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:14,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:14,383 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) [2021-05-21 20:24:14,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:14,440 INFO L93 Difference]: Finished difference Result 2133 states and 7770 transitions. [2021-05-21 20:24:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:14,440 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 [2021-05-21 20:24:14,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:14,443 INFO L225 Difference]: With dead ends: 2133 [2021-05-21 20:24:14,443 INFO L226 Difference]: Without dead ends: 1950 [2021-05-21 20:24:14,443 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 [2021-05-21 20:24:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2021-05-21 20:24:14,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1138. [2021-05-21 20:24:14,466 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) [2021-05-21 20:24:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 4379 transitions. [2021-05-21 20:24:14,468 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 4379 transitions. Word has length 25 [2021-05-21 20:24:14,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:14,468 INFO L482 AbstractCegarLoop]: Abstraction has 1138 states and 4379 transitions. [2021-05-21 20:24:14,468 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) [2021-05-21 20:24:14,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 4379 transitions. [2021-05-21 20:24:14,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:14,469 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:14,469 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:14,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable573 [2021-05-21 20:24:14,469 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]=== [2021-05-21 20:24:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:14,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1453594843, now seen corresponding path program 570 times [2021-05-21 20:24:14,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:14,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942333625] [2021-05-21 20:24:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:14,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:14,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942333625] [2021-05-21 20:24:14,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942333625] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:14,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:14,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:14,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078694778] [2021-05-21 20:24:14,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:14,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:14,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:14,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:14,545 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) [2021-05-21 20:24:14,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:14,602 INFO L93 Difference]: Finished difference Result 1949 states and 7157 transitions. [2021-05-21 20:24:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:14,603 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 [2021-05-21 20:24:14,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:14,606 INFO L225 Difference]: With dead ends: 1949 [2021-05-21 20:24:14,606 INFO L226 Difference]: Without dead ends: 1742 [2021-05-21 20:24:14,606 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 [2021-05-21 20:24:14,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-05-21 20:24:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1106. [2021-05-21 20:24:14,627 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) [2021-05-21 20:24:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 4279 transitions. [2021-05-21 20:24:14,629 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 4279 transitions. Word has length 25 [2021-05-21 20:24:14,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:14,629 INFO L482 AbstractCegarLoop]: Abstraction has 1106 states and 4279 transitions. [2021-05-21 20:24:14,629 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) [2021-05-21 20:24:14,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 4279 transitions. [2021-05-21 20:24:14,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:14,630 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:14,630 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] [2021-05-21 20:24:14,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable574 [2021-05-21 20:24:14,630 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]=== [2021-05-21 20:24:14,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:14,631 INFO L82 PathProgramCache]: Analyzing trace with hash 442075645, now seen corresponding path program 571 times [2021-05-21 20:24:14,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:14,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224164468] [2021-05-21 20:24:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:14,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:14,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224164468] [2021-05-21 20:24:14,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224164468] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:14,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:14,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:14,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915100306] [2021-05-21 20:24:14,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:14,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:14,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:14,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:14,707 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) [2021-05-21 20:24:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:14,764 INFO L93 Difference]: Finished difference Result 2181 states and 7970 transitions. [2021-05-21 20:24:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:14,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:14,767 INFO L225 Difference]: With dead ends: 2181 [2021-05-21 20:24:14,768 INFO L226 Difference]: Without dead ends: 1994 [2021-05-21 20:24:14,768 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 [2021-05-21 20:24:14,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2021-05-21 20:24:14,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1146. [2021-05-21 20:24:14,790 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) [2021-05-21 20:24:14,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 4423 transitions. [2021-05-21 20:24:14,792 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 4423 transitions. Word has length 25 [2021-05-21 20:24:14,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:14,792 INFO L482 AbstractCegarLoop]: Abstraction has 1146 states and 4423 transitions. [2021-05-21 20:24:14,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:14,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 4423 transitions. [2021-05-21 20:24:14,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:14,794 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:14,794 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] [2021-05-21 20:24:14,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable575 [2021-05-21 20:24:14,794 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]=== [2021-05-21 20:24:14,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:14,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1601261349, now seen corresponding path program 572 times [2021-05-21 20:24:14,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:14,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111948326] [2021-05-21 20:24:14,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:14,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:14,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111948326] [2021-05-21 20:24:14,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111948326] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:14,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:14,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:14,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348043185] [2021-05-21 20:24:14,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:14,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:14,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:14,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:14,869 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) [2021-05-21 20:24:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:14,924 INFO L93 Difference]: Finished difference Result 2177 states and 7930 transitions. [2021-05-21 20:24:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:14,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:14,928 INFO L225 Difference]: With dead ends: 2177 [2021-05-21 20:24:14,928 INFO L226 Difference]: Without dead ends: 1966 [2021-05-21 20:24:14,928 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 [2021-05-21 20:24:14,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2021-05-21 20:24:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1118. [2021-05-21 20:24:14,950 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) [2021-05-21 20:24:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 4323 transitions. [2021-05-21 20:24:14,952 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 4323 transitions. Word has length 25 [2021-05-21 20:24:14,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:14,952 INFO L482 AbstractCegarLoop]: Abstraction has 1118 states and 4323 transitions. [2021-05-21 20:24:14,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:14,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 4323 transitions. [2021-05-21 20:24:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:14,954 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:14,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:14,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable576 [2021-05-21 20:24:14,954 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]=== [2021-05-21 20:24:14,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:14,954 INFO L82 PathProgramCache]: Analyzing trace with hash -404721317, now seen corresponding path program 573 times [2021-05-21 20:24:14,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:14,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839524043] [2021-05-21 20:24:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:15,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:15,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839524043] [2021-05-21 20:24:15,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839524043] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:15,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:15,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:15,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282518021] [2021-05-21 20:24:15,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:15,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:15,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:15,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:15,029 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) [2021-05-21 20:24:15,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:15,091 INFO L93 Difference]: Finished difference Result 2093 states and 7626 transitions. [2021-05-21 20:24:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:15,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:15,094 INFO L225 Difference]: With dead ends: 2093 [2021-05-21 20:24:15,094 INFO L226 Difference]: Without dead ends: 1906 [2021-05-21 20:24:15,094 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 [2021-05-21 20:24:15,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-05-21 20:24:15,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1142. [2021-05-21 20:24:15,116 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) [2021-05-21 20:24:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4399 transitions. [2021-05-21 20:24:15,118 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4399 transitions. Word has length 25 [2021-05-21 20:24:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:15,118 INFO L482 AbstractCegarLoop]: Abstraction has 1142 states and 4399 transitions. [2021-05-21 20:24:15,119 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) [2021-05-21 20:24:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4399 transitions. [2021-05-21 20:24:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:15,120 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:15,120 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] [2021-05-21 20:24:15,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable577 [2021-05-21 20:24:15,120 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]=== [2021-05-21 20:24:15,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:15,120 INFO L82 PathProgramCache]: Analyzing trace with hash 787745115, now seen corresponding path program 574 times [2021-05-21 20:24:15,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:15,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073849801] [2021-05-21 20:24:15,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:15,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:15,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073849801] [2021-05-21 20:24:15,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073849801] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:15,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:15,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:15,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451616092] [2021-05-21 20:24:15,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:15,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:15,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:15,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:15,196 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) [2021-05-21 20:24:15,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:15,258 INFO L93 Difference]: Finished difference Result 1953 states and 7177 transitions. [2021-05-21 20:24:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:15,258 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 [2021-05-21 20:24:15,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:15,261 INFO L225 Difference]: With dead ends: 1953 [2021-05-21 20:24:15,261 INFO L226 Difference]: Without dead ends: 1754 [2021-05-21 20:24:15,261 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 [2021-05-21 20:24:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2021-05-21 20:24:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1118. [2021-05-21 20:24:15,283 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) [2021-05-21 20:24:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 4311 transitions. [2021-05-21 20:24:15,285 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 4311 transitions. Word has length 25 [2021-05-21 20:24:15,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:15,285 INFO L482 AbstractCegarLoop]: Abstraction has 1118 states and 4311 transitions. [2021-05-21 20:24:15,285 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) [2021-05-21 20:24:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 4311 transitions. [2021-05-21 20:24:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:15,286 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:15,286 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] [2021-05-21 20:24:15,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable578 [2021-05-21 20:24:15,286 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]=== [2021-05-21 20:24:15,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:15,286 INFO L82 PathProgramCache]: Analyzing trace with hash 577626297, now seen corresponding path program 575 times [2021-05-21 20:24:15,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:15,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816578348] [2021-05-21 20:24:15,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:15,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:15,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816578348] [2021-05-21 20:24:15,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816578348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:15,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:15,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:15,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888602181] [2021-05-21 20:24:15,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:15,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:15,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:15,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:15,363 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) [2021-05-21 20:24:15,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:15,418 INFO L93 Difference]: Finished difference Result 1881 states and 6913 transitions. [2021-05-21 20:24:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:15,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:15,422 INFO L225 Difference]: With dead ends: 1881 [2021-05-21 20:24:15,422 INFO L226 Difference]: Without dead ends: 1698 [2021-05-21 20:24:15,422 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 [2021-05-21 20:24:15,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2021-05-21 20:24:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1142. [2021-05-21 20:24:15,443 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) [2021-05-21 20:24:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4387 transitions. [2021-05-21 20:24:15,445 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4387 transitions. Word has length 25 [2021-05-21 20:24:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:15,445 INFO L482 AbstractCegarLoop]: Abstraction has 1142 states and 4387 transitions. [2021-05-21 20:24:15,445 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) [2021-05-21 20:24:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4387 transitions. [2021-05-21 20:24:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:15,446 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:15,446 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:15,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable579 [2021-05-21 20:24:15,446 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]=== [2021-05-21 20:24:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1658688923, now seen corresponding path program 576 times [2021-05-21 20:24:15,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:15,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681598623] [2021-05-21 20:24:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:15,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:15,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681598623] [2021-05-21 20:24:15,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681598623] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:15,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:15,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:15,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834679217] [2021-05-21 20:24:15,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:15,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:15,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:15,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:15,523 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) [2021-05-21 20:24:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:15,576 INFO L93 Difference]: Finished difference Result 1697 states and 6300 transitions. [2021-05-21 20:24:15,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:15,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:15,579 INFO L225 Difference]: With dead ends: 1697 [2021-05-21 20:24:15,579 INFO L226 Difference]: Without dead ends: 1482 [2021-05-21 20:24:15,579 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 [2021-05-21 20:24:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-05-21 20:24:15,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1102. [2021-05-21 20:24:15,606 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) [2021-05-21 20:24:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 4269 transitions. [2021-05-21 20:24:15,608 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 4269 transitions. Word has length 25 [2021-05-21 20:24:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:15,608 INFO L482 AbstractCegarLoop]: Abstraction has 1102 states and 4269 transitions. [2021-05-21 20:24:15,608 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) [2021-05-21 20:24:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 4269 transitions. [2021-05-21 20:24:15,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:15,610 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:15,610 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] [2021-05-21 20:24:15,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable580 [2021-05-21 20:24:15,610 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]=== [2021-05-21 20:24:15,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:15,610 INFO L82 PathProgramCache]: Analyzing trace with hash 112877023, now seen corresponding path program 577 times [2021-05-21 20:24:15,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:15,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685965866] [2021-05-21 20:24:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:15,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:15,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685965866] [2021-05-21 20:24:15,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685965866] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:15,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:15,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:15,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297077624] [2021-05-21 20:24:15,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:15,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:15,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:15,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:15,684 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) [2021-05-21 20:24:15,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:15,746 INFO L93 Difference]: Finished difference Result 2267 states and 8325 transitions. [2021-05-21 20:24:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:15,746 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 [2021-05-21 20:24:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:15,750 INFO L225 Difference]: With dead ends: 2267 [2021-05-21 20:24:15,750 INFO L226 Difference]: Without dead ends: 2078 [2021-05-21 20:24:15,750 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:15,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2021-05-21 20:24:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1152. [2021-05-21 20:24:15,773 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) [2021-05-21 20:24:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4458 transitions. [2021-05-21 20:24:15,775 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4458 transitions. Word has length 25 [2021-05-21 20:24:15,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:15,775 INFO L482 AbstractCegarLoop]: Abstraction has 1152 states and 4458 transitions. [2021-05-21 20:24:15,775 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) [2021-05-21 20:24:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4458 transitions. [2021-05-21 20:24:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:15,776 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:15,776 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:15,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable581 [2021-05-21 20:24:15,777 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]=== [2021-05-21 20:24:15,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:15,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1930459971, now seen corresponding path program 578 times [2021-05-21 20:24:15,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:15,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885398507] [2021-05-21 20:24:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:15,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:15,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885398507] [2021-05-21 20:24:15,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885398507] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:15,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:15,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:15,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168434435] [2021-05-21 20:24:15,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:15,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:15,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:15,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:15,852 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) [2021-05-21 20:24:15,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:15,909 INFO L93 Difference]: Finished difference Result 2265 states and 8290 transitions. [2021-05-21 20:24:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:15,909 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 [2021-05-21 20:24:15,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:15,913 INFO L225 Difference]: With dead ends: 2265 [2021-05-21 20:24:15,913 INFO L226 Difference]: Without dead ends: 2048 [2021-05-21 20:24:15,913 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 [2021-05-21 20:24:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2021-05-21 20:24:15,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1122. [2021-05-21 20:24:15,936 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) [2021-05-21 20:24:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4351 transitions. [2021-05-21 20:24:15,938 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4351 transitions. Word has length 25 [2021-05-21 20:24:15,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:15,938 INFO L482 AbstractCegarLoop]: Abstraction has 1122 states and 4351 transitions. [2021-05-21 20:24:15,938 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) [2021-05-21 20:24:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4351 transitions. [2021-05-21 20:24:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:15,939 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:15,939 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:15,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable582 [2021-05-21 20:24:15,940 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]=== [2021-05-21 20:24:15,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:15,940 INFO L82 PathProgramCache]: Analyzing trace with hash -733919939, now seen corresponding path program 579 times [2021-05-21 20:24:15,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:15,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475028092] [2021-05-21 20:24:15,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:16,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:16,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475028092] [2021-05-21 20:24:16,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475028092] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:16,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:16,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:16,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317751290] [2021-05-21 20:24:16,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:16,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:16,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:16,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:16,015 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) [2021-05-21 20:24:16,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:16,075 INFO L93 Difference]: Finished difference Result 2261 states and 8292 transitions. [2021-05-21 20:24:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:16,075 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 [2021-05-21 20:24:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:16,079 INFO L225 Difference]: With dead ends: 2261 [2021-05-21 20:24:16,079 INFO L226 Difference]: Without dead ends: 2072 [2021-05-21 20:24:16,079 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 [2021-05-21 20:24:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-05-21 20:24:16,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1150. [2021-05-21 20:24:16,102 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) [2021-05-21 20:24:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 4439 transitions. [2021-05-21 20:24:16,104 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 4439 transitions. Word has length 25 [2021-05-21 20:24:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:16,104 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 4439 transitions. [2021-05-21 20:24:16,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 4439 transitions. [2021-05-21 20:24:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:16,106 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:16,106 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] [2021-05-21 20:24:16,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable583 [2021-05-21 20:24:16,106 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]=== [2021-05-21 20:24:16,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:16,106 INFO L82 PathProgramCache]: Analyzing trace with hash 458546493, now seen corresponding path program 580 times [2021-05-21 20:24:16,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:16,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478969561] [2021-05-21 20:24:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:16,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:16,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478969561] [2021-05-21 20:24:16,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478969561] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:16,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:16,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:16,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104893234] [2021-05-21 20:24:16,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:16,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:16,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:16,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:16,180 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) [2021-05-21 20:24:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:16,237 INFO L93 Difference]: Finished difference Result 2255 states and 8247 transitions. [2021-05-21 20:24:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:16,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:16,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:16,241 INFO L225 Difference]: With dead ends: 2255 [2021-05-21 20:24:16,241 INFO L226 Difference]: Without dead ends: 2044 [2021-05-21 20:24:16,241 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2021-05-21 20:24:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1122. [2021-05-21 20:24:16,264 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) [2021-05-21 20:24:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4337 transitions. [2021-05-21 20:24:16,265 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4337 transitions. Word has length 25 [2021-05-21 20:24:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:16,266 INFO L482 AbstractCegarLoop]: Abstraction has 1122 states and 4337 transitions. [2021-05-21 20:24:16,266 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) [2021-05-21 20:24:16,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4337 transitions. [2021-05-21 20:24:16,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:16,267 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:16,267 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:16,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable584 [2021-05-21 20:24:16,267 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]=== [2021-05-21 20:24:16,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:16,267 INFO L82 PathProgramCache]: Analyzing trace with hash 248427675, now seen corresponding path program 581 times [2021-05-21 20:24:16,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:16,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123790996] [2021-05-21 20:24:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:16,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:16,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123790996] [2021-05-21 20:24:16,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123790996] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:16,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:16,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:16,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686775083] [2021-05-21 20:24:16,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:16,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:16,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:16,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:16,342 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) [2021-05-21 20:24:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:16,399 INFO L93 Difference]: Finished difference Result 2257 states and 8268 transitions. [2021-05-21 20:24:16,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:16,400 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 [2021-05-21 20:24:16,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:16,403 INFO L225 Difference]: With dead ends: 2257 [2021-05-21 20:24:16,403 INFO L226 Difference]: Without dead ends: 2070 [2021-05-21 20:24:16,404 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 [2021-05-21 20:24:16,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-05-21 20:24:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1150. [2021-05-21 20:24:16,427 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) [2021-05-21 20:24:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 4425 transitions. [2021-05-21 20:24:16,430 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 4425 transitions. Word has length 25 [2021-05-21 20:24:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:16,430 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 4425 transitions. [2021-05-21 20:24:16,430 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) [2021-05-21 20:24:16,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 4425 transitions. [2021-05-21 20:24:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:16,431 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:16,431 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] [2021-05-21 20:24:16,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable585 [2021-05-21 20:24:16,431 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]=== [2021-05-21 20:24:16,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:16,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1329490301, now seen corresponding path program 582 times [2021-05-21 20:24:16,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:16,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805256866] [2021-05-21 20:24:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:16,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:16,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:16,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805256866] [2021-05-21 20:24:16,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805256866] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:16,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:16,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:16,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566302534] [2021-05-21 20:24:16,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:16,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:16,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:16,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:16,520 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) [2021-05-21 20:24:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:16,578 INFO L93 Difference]: Finished difference Result 2253 states and 8228 transitions. [2021-05-21 20:24:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:16,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:16,582 INFO L225 Difference]: With dead ends: 2253 [2021-05-21 20:24:16,582 INFO L226 Difference]: Without dead ends: 2028 [2021-05-21 20:24:16,582 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 [2021-05-21 20:24:16,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2021-05-21 20:24:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1108. [2021-05-21 20:24:16,607 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) [2021-05-21 20:24:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 4294 transitions. [2021-05-21 20:24:16,609 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 4294 transitions. Word has length 25 [2021-05-21 20:24:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:16,609 INFO L482 AbstractCegarLoop]: Abstraction has 1108 states and 4294 transitions. [2021-05-21 20:24:16,609 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) [2021-05-21 20:24:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 4294 transitions. [2021-05-21 20:24:16,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:16,610 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:16,610 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] [2021-05-21 20:24:16,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable586 [2021-05-21 20:24:16,610 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]=== [2021-05-21 20:24:16,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:16,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1910184515, now seen corresponding path program 583 times [2021-05-21 20:24:16,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:16,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115031412] [2021-05-21 20:24:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:16,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:16,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115031412] [2021-05-21 20:24:16,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115031412] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:16,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:16,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:16,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007499154] [2021-05-21 20:24:16,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:16,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:16,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:16,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:16,686 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) [2021-05-21 20:24:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:16,744 INFO L93 Difference]: Finished difference Result 2223 states and 8131 transitions. [2021-05-21 20:24:16,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:16,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:16,748 INFO L225 Difference]: With dead ends: 2223 [2021-05-21 20:24:16,748 INFO L226 Difference]: Without dead ends: 2034 [2021-05-21 20:24:16,748 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 [2021-05-21 20:24:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2021-05-21 20:24:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1150. [2021-05-21 20:24:16,771 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) [2021-05-21 20:24:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 4443 transitions. [2021-05-21 20:24:16,773 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 4443 transitions. Word has length 25 [2021-05-21 20:24:16,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:16,773 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 4443 transitions. [2021-05-21 20:24:16,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:16,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 4443 transitions. [2021-05-21 20:24:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:16,774 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:16,774 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:16,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable587 [2021-05-21 20:24:16,774 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]=== [2021-05-21 20:24:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:16,775 INFO L82 PathProgramCache]: Analyzing trace with hash 341445787, now seen corresponding path program 584 times [2021-05-21 20:24:16,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:16,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303084677] [2021-05-21 20:24:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:16,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:16,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303084677] [2021-05-21 20:24:16,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303084677] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:16,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:16,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:16,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566342469] [2021-05-21 20:24:16,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:16,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:16,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:16,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:16,862 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) [2021-05-21 20:24:16,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:16,930 INFO L93 Difference]: Finished difference Result 2221 states and 8096 transitions. [2021-05-21 20:24:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:16,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:16,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:16,935 INFO L225 Difference]: With dead ends: 2221 [2021-05-21 20:24:16,935 INFO L226 Difference]: Without dead ends: 2004 [2021-05-21 20:24:16,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:16,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2021-05-21 20:24:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1120. [2021-05-21 20:24:16,968 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) [2021-05-21 20:24:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4338 transitions. [2021-05-21 20:24:16,971 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4338 transitions. Word has length 25 [2021-05-21 20:24:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:16,971 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4338 transitions. [2021-05-21 20:24:16,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4338 transitions. [2021-05-21 20:24:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:16,973 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:16,973 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] [2021-05-21 20:24:16,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable588 [2021-05-21 20:24:16,973 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]=== [2021-05-21 20:24:16,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1588755901, now seen corresponding path program 585 times [2021-05-21 20:24:16,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:16,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829269899] [2021-05-21 20:24:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:17,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:17,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829269899] [2021-05-21 20:24:17,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829269899] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:17,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:17,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:17,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766784043] [2021-05-21 20:24:17,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:17,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:17,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:17,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:17,073 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) [2021-05-21 20:24:17,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:17,143 INFO L93 Difference]: Finished difference Result 2143 states and 7835 transitions. [2021-05-21 20:24:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:17,144 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 [2021-05-21 20:24:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:17,148 INFO L225 Difference]: With dead ends: 2143 [2021-05-21 20:24:17,149 INFO L226 Difference]: Without dead ends: 1954 [2021-05-21 20:24:17,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:17,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2021-05-21 20:24:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1144. [2021-05-21 20:24:17,181 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) [2021-05-21 20:24:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4414 transitions. [2021-05-21 20:24:17,184 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4414 transitions. Word has length 25 [2021-05-21 20:24:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:17,184 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4414 transitions. [2021-05-21 20:24:17,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4414 transitions. [2021-05-21 20:24:17,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:17,186 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:17,186 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] [2021-05-21 20:24:17,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable589 [2021-05-21 20:24:17,186 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]=== [2021-05-21 20:24:17,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:17,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2144544189, now seen corresponding path program 586 times [2021-05-21 20:24:17,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:17,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942739038] [2021-05-21 20:24:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:17,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:17,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942739038] [2021-05-21 20:24:17,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942739038] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:17,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:17,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:17,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522318373] [2021-05-21 20:24:17,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:17,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:17,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:17,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:17,276 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) [2021-05-21 20:24:17,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:17,337 INFO L93 Difference]: Finished difference Result 2001 states and 7381 transitions. [2021-05-21 20:24:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:17,338 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 [2021-05-21 20:24:17,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:17,341 INFO L225 Difference]: With dead ends: 2001 [2021-05-21 20:24:17,341 INFO L226 Difference]: Without dead ends: 1802 [2021-05-21 20:24:17,341 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 [2021-05-21 20:24:17,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2021-05-21 20:24:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1120. [2021-05-21 20:24:17,363 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) [2021-05-21 20:24:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4326 transitions. [2021-05-21 20:24:17,365 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4326 transitions. Word has length 25 [2021-05-21 20:24:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:17,365 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4326 transitions. [2021-05-21 20:24:17,365 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) [2021-05-21 20:24:17,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4326 transitions. [2021-05-21 20:24:17,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:17,366 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:17,366 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:17,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable590 [2021-05-21 20:24:17,366 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]=== [2021-05-21 20:24:17,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:17,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1723863781, now seen corresponding path program 587 times [2021-05-21 20:24:17,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:17,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028417314] [2021-05-21 20:24:17,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:17,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:17,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028417314] [2021-05-21 20:24:17,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028417314] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:17,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:17,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:17,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265969670] [2021-05-21 20:24:17,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:17,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:17,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:17,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:17,440 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) [2021-05-21 20:24:17,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:17,498 INFO L93 Difference]: Finished difference Result 2141 states and 7818 transitions. [2021-05-21 20:24:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:17,498 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 [2021-05-21 20:24:17,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:17,502 INFO L225 Difference]: With dead ends: 2141 [2021-05-21 20:24:17,502 INFO L226 Difference]: Without dead ends: 1954 [2021-05-21 20:24:17,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:17,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2021-05-21 20:24:17,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1144. [2021-05-21 20:24:17,524 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) [2021-05-21 20:24:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4402 transitions. [2021-05-21 20:24:17,526 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4402 transitions. Word has length 25 [2021-05-21 20:24:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:17,526 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4402 transitions. [2021-05-21 20:24:17,526 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) [2021-05-21 20:24:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4402 transitions. [2021-05-21 20:24:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:17,528 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:17,528 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] [2021-05-21 20:24:17,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable591 [2021-05-21 20:24:17,528 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]=== [2021-05-21 20:24:17,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:17,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1930671747, now seen corresponding path program 588 times [2021-05-21 20:24:17,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:17,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529617763] [2021-05-21 20:24:17,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:17,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:17,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529617763] [2021-05-21 20:24:17,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529617763] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:17,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:17,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:17,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710403684] [2021-05-21 20:24:17,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:17,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:17,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:17,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:17,604 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) [2021-05-21 20:24:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:17,680 INFO L93 Difference]: Finished difference Result 2001 states and 7369 transitions. [2021-05-21 20:24:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:17,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:17,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:17,683 INFO L225 Difference]: With dead ends: 2001 [2021-05-21 20:24:17,683 INFO L226 Difference]: Without dead ends: 1790 [2021-05-21 20:24:17,683 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 [2021-05-21 20:24:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-05-21 20:24:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1108. [2021-05-21 20:24:17,705 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) [2021-05-21 20:24:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 4288 transitions. [2021-05-21 20:24:17,707 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 4288 transitions. Word has length 25 [2021-05-21 20:24:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:17,707 INFO L482 AbstractCegarLoop]: Abstraction has 1108 states and 4288 transitions. [2021-05-21 20:24:17,707 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) [2021-05-21 20:24:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 4288 transitions. [2021-05-21 20:24:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:17,709 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:17,709 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] [2021-05-21 20:24:17,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable592 [2021-05-21 20:24:17,709 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]=== [2021-05-21 20:24:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:17,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1528034715, now seen corresponding path program 589 times [2021-05-21 20:24:17,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:17,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255588374] [2021-05-21 20:24:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:17,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:17,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255588374] [2021-05-21 20:24:17,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255588374] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:17,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:17,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:17,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431307489] [2021-05-21 20:24:17,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:17,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:17,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:17,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:17,783 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) [2021-05-21 20:24:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:17,843 INFO L93 Difference]: Finished difference Result 2115 states and 7713 transitions. [2021-05-21 20:24:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:17,844 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 [2021-05-21 20:24:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:17,847 INFO L225 Difference]: With dead ends: 2115 [2021-05-21 20:24:17,847 INFO L226 Difference]: Without dead ends: 1926 [2021-05-21 20:24:17,847 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:17,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-05-21 20:24:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1148. [2021-05-21 20:24:17,869 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) [2021-05-21 20:24:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 4432 transitions. [2021-05-21 20:24:17,871 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 4432 transitions. Word has length 25 [2021-05-21 20:24:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:17,871 INFO L482 AbstractCegarLoop]: Abstraction has 1148 states and 4432 transitions. [2021-05-21 20:24:17,871 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) [2021-05-21 20:24:17,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 4432 transitions. [2021-05-21 20:24:17,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:17,873 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:17,873 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] [2021-05-21 20:24:17,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable593 [2021-05-21 20:24:17,873 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]=== [2021-05-21 20:24:17,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:17,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1574466149, now seen corresponding path program 590 times [2021-05-21 20:24:17,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:17,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094963028] [2021-05-21 20:24:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:17,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:17,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094963028] [2021-05-21 20:24:17,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094963028] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:17,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:17,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:17,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512555486] [2021-05-21 20:24:17,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:17,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:17,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:17,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:17,947 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) [2021-05-21 20:24:18,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:18,004 INFO L93 Difference]: Finished difference Result 2109 states and 7668 transitions. [2021-05-21 20:24:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:18,004 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 [2021-05-21 20:24:18,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:18,008 INFO L225 Difference]: With dead ends: 2109 [2021-05-21 20:24:18,008 INFO L226 Difference]: Without dead ends: 1898 [2021-05-21 20:24:18,008 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 [2021-05-21 20:24:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2021-05-21 20:24:18,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1120. [2021-05-21 20:24:18,030 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) [2021-05-21 20:24:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4332 transitions. [2021-05-21 20:24:18,032 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4332 transitions. Word has length 25 [2021-05-21 20:24:18,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:18,032 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4332 transitions. [2021-05-21 20:24:18,032 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) [2021-05-21 20:24:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4332 transitions. [2021-05-21 20:24:18,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:18,033 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:18,033 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:18,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable594 [2021-05-21 20:24:18,033 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]=== [2021-05-21 20:24:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:18,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1047132669, now seen corresponding path program 591 times [2021-05-21 20:24:18,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:18,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910572890] [2021-05-21 20:24:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:18,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:18,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910572890] [2021-05-21 20:24:18,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910572890] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:18,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:18,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:18,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591283826] [2021-05-21 20:24:18,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:18,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:18,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:18,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:18,120 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) [2021-05-21 20:24:18,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:18,188 INFO L93 Difference]: Finished difference Result 2017 states and 7336 transitions. [2021-05-21 20:24:18,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:18,188 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 [2021-05-21 20:24:18,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:18,191 INFO L225 Difference]: With dead ends: 2017 [2021-05-21 20:24:18,191 INFO L226 Difference]: Without dead ends: 1828 [2021-05-21 20:24:18,191 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 [2021-05-21 20:24:18,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-05-21 20:24:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1144. [2021-05-21 20:24:18,213 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) [2021-05-21 20:24:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4408 transitions. [2021-05-21 20:24:18,215 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4408 transitions. Word has length 25 [2021-05-21 20:24:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:18,215 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4408 transitions. [2021-05-21 20:24:18,215 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) [2021-05-21 20:24:18,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4408 transitions. [2021-05-21 20:24:18,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:18,217 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:18,217 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] [2021-05-21 20:24:18,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable595 [2021-05-21 20:24:18,217 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]=== [2021-05-21 20:24:18,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:18,217 INFO L82 PathProgramCache]: Analyzing trace with hash 121482651, now seen corresponding path program 592 times [2021-05-21 20:24:18,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:18,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896750461] [2021-05-21 20:24:18,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:18,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:18,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896750461] [2021-05-21 20:24:18,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896750461] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:18,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:18,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:18,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886837217] [2021-05-21 20:24:18,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:18,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:18,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:18,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:18,302 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) [2021-05-21 20:24:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:18,363 INFO L93 Difference]: Finished difference Result 1875 states and 6882 transitions. [2021-05-21 20:24:18,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:18,363 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 [2021-05-21 20:24:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:18,366 INFO L225 Difference]: With dead ends: 1875 [2021-05-21 20:24:18,366 INFO L226 Difference]: Without dead ends: 1676 [2021-05-21 20:24:18,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2021-05-21 20:24:18,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1120. [2021-05-21 20:24:18,387 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) [2021-05-21 20:24:18,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4320 transitions. [2021-05-21 20:24:18,389 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4320 transitions. Word has length 25 [2021-05-21 20:24:18,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:18,389 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4320 transitions. [2021-05-21 20:24:18,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4320 transitions. [2021-05-21 20:24:18,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:18,390 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:18,391 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] [2021-05-21 20:24:18,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable596 [2021-05-21 20:24:18,391 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]=== [2021-05-21 20:24:18,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:18,391 INFO L82 PathProgramCache]: Analyzing trace with hash -37866085, now seen corresponding path program 593 times [2021-05-21 20:24:18,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:18,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777918054] [2021-05-21 20:24:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:18,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:18,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777918054] [2021-05-21 20:24:18,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777918054] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:18,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:18,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:18,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932482690] [2021-05-21 20:24:18,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:18,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:18,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:18,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:18,465 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) [2021-05-21 20:24:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:18,523 INFO L93 Difference]: Finished difference Result 1883 states and 6922 transitions. [2021-05-21 20:24:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:18,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:18,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:18,527 INFO L225 Difference]: With dead ends: 1883 [2021-05-21 20:24:18,527 INFO L226 Difference]: Without dead ends: 1700 [2021-05-21 20:24:18,527 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 [2021-05-21 20:24:18,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2021-05-21 20:24:18,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1144. [2021-05-21 20:24:18,555 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) [2021-05-21 20:24:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4396 transitions. [2021-05-21 20:24:18,557 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4396 transitions. Word has length 25 [2021-05-21 20:24:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:18,557 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4396 transitions. [2021-05-21 20:24:18,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4396 transitions. [2021-05-21 20:24:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:18,559 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:18,559 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] [2021-05-21 20:24:18,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable597 [2021-05-21 20:24:18,559 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]=== [2021-05-21 20:24:18,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:18,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1043196541, now seen corresponding path program 594 times [2021-05-21 20:24:18,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:18,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801268030] [2021-05-21 20:24:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:18,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:18,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801268030] [2021-05-21 20:24:18,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801268030] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:18,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:18,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:18,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753821927] [2021-05-21 20:24:18,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:18,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:18,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:18,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:18,634 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) [2021-05-21 20:24:18,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:18,693 INFO L93 Difference]: Finished difference Result 1699 states and 6309 transitions. [2021-05-21 20:24:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:18,693 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 [2021-05-21 20:24:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:18,696 INFO L225 Difference]: With dead ends: 1699 [2021-05-21 20:24:18,696 INFO L226 Difference]: Without dead ends: 1488 [2021-05-21 20:24:18,696 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 [2021-05-21 20:24:18,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2021-05-21 20:24:18,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1108. [2021-05-21 20:24:18,718 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) [2021-05-21 20:24:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 4282 transitions. [2021-05-21 20:24:18,719 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 4282 transitions. Word has length 25 [2021-05-21 20:24:18,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:18,720 INFO L482 AbstractCegarLoop]: Abstraction has 1108 states and 4282 transitions. [2021-05-21 20:24:18,720 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) [2021-05-21 20:24:18,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 4282 transitions. [2021-05-21 20:24:18,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:18,721 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:18,721 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] [2021-05-21 20:24:18,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable598 [2021-05-21 20:24:18,721 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]=== [2021-05-21 20:24:18,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:18,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1794536071, now seen corresponding path program 595 times [2021-05-21 20:24:18,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:18,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114263450] [2021-05-21 20:24:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:18,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:18,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114263450] [2021-05-21 20:24:18,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114263450] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:18,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:18,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:18,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237401153] [2021-05-21 20:24:18,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:18,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:18,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:18,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:18,797 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) [2021-05-21 20:24:18,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:18,861 INFO L93 Difference]: Finished difference Result 1803 states and 6620 transitions. [2021-05-21 20:24:18,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:18,861 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 [2021-05-21 20:24:18,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:18,864 INFO L225 Difference]: With dead ends: 1803 [2021-05-21 20:24:18,864 INFO L226 Difference]: Without dead ends: 1616 [2021-05-21 20:24:18,864 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 [2021-05-21 20:24:18,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2021-05-21 20:24:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1148. [2021-05-21 20:24:18,885 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) [2021-05-21 20:24:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 4426 transitions. [2021-05-21 20:24:18,887 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 4426 transitions. Word has length 25 [2021-05-21 20:24:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:18,887 INFO L482 AbstractCegarLoop]: Abstraction has 1148 states and 4426 transitions. [2021-05-21 20:24:18,887 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) [2021-05-21 20:24:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 4426 transitions. [2021-05-21 20:24:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:18,888 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:18,888 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] [2021-05-21 20:24:18,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable599 [2021-05-21 20:24:18,888 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]=== [2021-05-21 20:24:18,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:18,888 INFO L82 PathProgramCache]: Analyzing trace with hash -713473445, now seen corresponding path program 596 times [2021-05-21 20:24:18,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:18,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588494152] [2021-05-21 20:24:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:18,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:18,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588494152] [2021-05-21 20:24:18,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588494152] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:18,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:18,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:18,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326412146] [2021-05-21 20:24:18,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:18,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:18,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:18,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:18,967 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) [2021-05-21 20:24:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:19,026 INFO L93 Difference]: Finished difference Result 1799 states and 6580 transitions. [2021-05-21 20:24:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:19,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:19,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:19,029 INFO L225 Difference]: With dead ends: 1799 [2021-05-21 20:24:19,029 INFO L226 Difference]: Without dead ends: 1588 [2021-05-21 20:24:19,029 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 [2021-05-21 20:24:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-05-21 20:24:19,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1120. [2021-05-21 20:24:19,049 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) [2021-05-21 20:24:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4326 transitions. [2021-05-21 20:24:19,051 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4326 transitions. Word has length 25 [2021-05-21 20:24:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:19,052 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4326 transitions. [2021-05-21 20:24:19,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4326 transitions. [2021-05-21 20:24:19,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:19,053 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:19,053 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:19,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable600 [2021-05-21 20:24:19,054 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]=== [2021-05-21 20:24:19,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:19,054 INFO L82 PathProgramCache]: Analyzing trace with hash 2019529179, now seen corresponding path program 597 times [2021-05-21 20:24:19,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:19,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642509671] [2021-05-21 20:24:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:19,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:19,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642509671] [2021-05-21 20:24:19,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642509671] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:19,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:19,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:19,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054651481] [2021-05-21 20:24:19,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:19,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:19,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:19,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:19,135 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) [2021-05-21 20:24:19,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:19,198 INFO L93 Difference]: Finished difference Result 1715 states and 6276 transitions. [2021-05-21 20:24:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:19,199 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 [2021-05-21 20:24:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:19,201 INFO L225 Difference]: With dead ends: 1715 [2021-05-21 20:24:19,201 INFO L226 Difference]: Without dead ends: 1528 [2021-05-21 20:24:19,201 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 [2021-05-21 20:24:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-05-21 20:24:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1144. [2021-05-21 20:24:19,221 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) [2021-05-21 20:24:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4402 transitions. [2021-05-21 20:24:19,223 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4402 transitions. Word has length 25 [2021-05-21 20:24:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:19,223 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4402 transitions. [2021-05-21 20:24:19,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4402 transitions. [2021-05-21 20:24:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:19,224 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:19,225 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] [2021-05-21 20:24:19,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable601 [2021-05-21 20:24:19,225 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]=== [2021-05-21 20:24:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:19,225 INFO L82 PathProgramCache]: Analyzing trace with hash 331282907, now seen corresponding path program 598 times [2021-05-21 20:24:19,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:19,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335987990] [2021-05-21 20:24:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:19,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:19,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335987990] [2021-05-21 20:24:19,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335987990] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:19,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:19,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:19,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245550722] [2021-05-21 20:24:19,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:19,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:19,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:19,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:19,300 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) [2021-05-21 20:24:19,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:19,357 INFO L93 Difference]: Finished difference Result 1575 states and 5827 transitions. [2021-05-21 20:24:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:19,357 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:19,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:19,360 INFO L225 Difference]: With dead ends: 1575 [2021-05-21 20:24:19,360 INFO L226 Difference]: Without dead ends: 1376 [2021-05-21 20:24:19,360 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 [2021-05-21 20:24:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-05-21 20:24:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1120. [2021-05-21 20:24:19,379 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) [2021-05-21 20:24:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4314 transitions. [2021-05-21 20:24:19,381 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4314 transitions. Word has length 25 [2021-05-21 20:24:19,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:19,381 INFO L482 AbstractCegarLoop]: Abstraction has 1120 states and 4314 transitions. [2021-05-21 20:24:19,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:19,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4314 transitions. [2021-05-21 20:24:19,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:19,382 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:19,382 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:19,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable602 [2021-05-21 20:24:19,382 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]=== [2021-05-21 20:24:19,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:19,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1887433155, now seen corresponding path program 599 times [2021-05-21 20:24:19,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:19,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374783208] [2021-05-21 20:24:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:19,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:19,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374783208] [2021-05-21 20:24:19,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374783208] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:19,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:19,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:19,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834687438] [2021-05-21 20:24:19,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:19,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:19,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:19,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:19,457 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) [2021-05-21 20:24:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:19,509 INFO L93 Difference]: Finished difference Result 1503 states and 5563 transitions. [2021-05-21 20:24:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:19,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:19,511 INFO L225 Difference]: With dead ends: 1503 [2021-05-21 20:24:19,511 INFO L226 Difference]: Without dead ends: 1320 [2021-05-21 20:24:19,511 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 [2021-05-21 20:24:19,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-05-21 20:24:19,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1144. [2021-05-21 20:24:19,530 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) [2021-05-21 20:24:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4390 transitions. [2021-05-21 20:24:19,532 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4390 transitions. Word has length 25 [2021-05-21 20:24:19,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:19,532 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4390 transitions. [2021-05-21 20:24:19,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:19,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4390 transitions. [2021-05-21 20:24:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:19,534 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:19,534 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:19,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable603 [2021-05-21 20:24:19,534 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]=== [2021-05-21 20:24:19,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1560737179, now seen corresponding path program 600 times [2021-05-21 20:24:19,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:19,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321844313] [2021-05-21 20:24:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:19,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:19,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:19,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321844313] [2021-05-21 20:24:19,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321844313] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:19,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:19,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:19,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830380772] [2021-05-21 20:24:19,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:19,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:19,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:19,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:19,609 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) [2021-05-21 20:24:19,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:19,663 INFO L93 Difference]: Finished difference Result 1319 states and 4950 transitions. [2021-05-21 20:24:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:19,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:19,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:19,666 INFO L225 Difference]: With dead ends: 1319 [2021-05-21 20:24:19,666 INFO L226 Difference]: Without dead ends: 1100 [2021-05-21 20:24:19,666 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 [2021-05-21 20:24:19,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-05-21 20:24:19,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1100. [2021-05-21 20:24:19,699 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) [2021-05-21 20:24:19,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4265 transitions. [2021-05-21 20:24:19,701 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4265 transitions. Word has length 25 [2021-05-21 20:24:19,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:19,701 INFO L482 AbstractCegarLoop]: Abstraction has 1100 states and 4265 transitions. [2021-05-21 20:24:19,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4265 transitions. [2021-05-21 20:24:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:19,702 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:19,702 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:19,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable604 [2021-05-21 20:24:19,702 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]=== [2021-05-21 20:24:19,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:19,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1731112383, now seen corresponding path program 601 times [2021-05-21 20:24:19,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:19,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120181604] [2021-05-21 20:24:19,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:19,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:19,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120181604] [2021-05-21 20:24:19,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120181604] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:19,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:19,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:19,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460041960] [2021-05-21 20:24:19,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:19,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:19,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:19,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:19,779 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) [2021-05-21 20:24:19,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:19,842 INFO L93 Difference]: Finished difference Result 2103 states and 7646 transitions. [2021-05-21 20:24:19,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:19,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:19,846 INFO L225 Difference]: With dead ends: 2103 [2021-05-21 20:24:19,846 INFO L226 Difference]: Without dead ends: 1914 [2021-05-21 20:24:19,846 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 [2021-05-21 20:24:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2021-05-21 20:24:19,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1144. [2021-05-21 20:24:19,868 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) [2021-05-21 20:24:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4423 transitions. [2021-05-21 20:24:19,870 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4423 transitions. Word has length 25 [2021-05-21 20:24:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:19,870 INFO L482 AbstractCegarLoop]: Abstraction has 1144 states and 4423 transitions. [2021-05-21 20:24:19,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4423 transitions. [2021-05-21 20:24:19,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:19,872 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:19,872 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] [2021-05-21 20:24:19,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable605 [2021-05-21 20:24:19,872 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]=== [2021-05-21 20:24:19,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:19,872 INFO L82 PathProgramCache]: Analyzing trace with hash 520517919, now seen corresponding path program 602 times [2021-05-21 20:24:19,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:19,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894283940] [2021-05-21 20:24:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:19,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:19,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894283940] [2021-05-21 20:24:19,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894283940] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:19,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:19,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:19,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239330713] [2021-05-21 20:24:19,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:19,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:19,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:19,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:19,947 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) [2021-05-21 20:24:20,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:20,003 INFO L93 Difference]: Finished difference Result 2101 states and 7611 transitions. [2021-05-21 20:24:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:20,003 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 [2021-05-21 20:24:20,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:20,007 INFO L225 Difference]: With dead ends: 2101 [2021-05-21 20:24:20,007 INFO L226 Difference]: Without dead ends: 1884 [2021-05-21 20:24:20,007 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 [2021-05-21 20:24:20,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-05-21 20:24:20,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1114. [2021-05-21 20:24:20,029 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) [2021-05-21 20:24:20,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4316 transitions. [2021-05-21 20:24:20,031 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4316 transitions. Word has length 25 [2021-05-21 20:24:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:20,031 INFO L482 AbstractCegarLoop]: Abstraction has 1114 states and 4316 transitions. [2021-05-21 20:24:20,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4316 transitions. [2021-05-21 20:24:20,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:20,032 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:20,032 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:20,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable606 [2021-05-21 20:24:20,033 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]=== [2021-05-21 20:24:20,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:20,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1717057951, now seen corresponding path program 603 times [2021-05-21 20:24:20,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:20,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456001137] [2021-05-21 20:24:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:20,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:20,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456001137] [2021-05-21 20:24:20,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456001137] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:20,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:20,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:20,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020852427] [2021-05-21 20:24:20,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:20,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:20,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:20,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:20,107 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) [2021-05-21 20:24:20,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:20,165 INFO L93 Difference]: Finished difference Result 2097 states and 7613 transitions. [2021-05-21 20:24:20,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:20,165 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 [2021-05-21 20:24:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:20,168 INFO L225 Difference]: With dead ends: 2097 [2021-05-21 20:24:20,168 INFO L226 Difference]: Without dead ends: 1908 [2021-05-21 20:24:20,168 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 [2021-05-21 20:24:20,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2021-05-21 20:24:20,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1142. [2021-05-21 20:24:20,190 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) [2021-05-21 20:24:20,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4404 transitions. [2021-05-21 20:24:20,192 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4404 transitions. Word has length 25 [2021-05-21 20:24:20,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:20,192 INFO L482 AbstractCegarLoop]: Abstraction has 1142 states and 4404 transitions. [2021-05-21 20:24:20,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:20,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4404 transitions. [2021-05-21 20:24:20,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:20,194 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:20,194 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:20,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable607 [2021-05-21 20:24:20,194 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]=== [2021-05-21 20:24:20,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:20,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1385442913, now seen corresponding path program 604 times [2021-05-21 20:24:20,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:20,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123662436] [2021-05-21 20:24:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:20,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:20,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123662436] [2021-05-21 20:24:20,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123662436] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:20,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:20,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:20,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622793459] [2021-05-21 20:24:20,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:20,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:20,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:20,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:20,267 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) [2021-05-21 20:24:20,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:20,323 INFO L93 Difference]: Finished difference Result 2091 states and 7568 transitions. [2021-05-21 20:24:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:20,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:20,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:20,326 INFO L225 Difference]: With dead ends: 2091 [2021-05-21 20:24:20,326 INFO L226 Difference]: Without dead ends: 1880 [2021-05-21 20:24:20,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-05-21 20:24:20,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1114. [2021-05-21 20:24:20,348 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) [2021-05-21 20:24:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4302 transitions. [2021-05-21 20:24:20,350 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4302 transitions. Word has length 25 [2021-05-21 20:24:20,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:20,350 INFO L482 AbstractCegarLoop]: Abstraction has 1114 states and 4302 transitions. [2021-05-21 20:24:20,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4302 transitions. [2021-05-21 20:24:20,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:20,351 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:20,351 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:20,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable608 [2021-05-21 20:24:20,351 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]=== [2021-05-21 20:24:20,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:20,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1595561731, now seen corresponding path program 605 times [2021-05-21 20:24:20,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:20,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933483130] [2021-05-21 20:24:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:20,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:20,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933483130] [2021-05-21 20:24:20,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933483130] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:20,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:20,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:20,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404140676] [2021-05-21 20:24:20,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:20,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:20,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:20,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:20,429 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) [2021-05-21 20:24:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:20,486 INFO L93 Difference]: Finished difference Result 2093 states and 7589 transitions. [2021-05-21 20:24:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:20,487 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 [2021-05-21 20:24:20,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:20,490 INFO L225 Difference]: With dead ends: 2093 [2021-05-21 20:24:20,490 INFO L226 Difference]: Without dead ends: 1906 [2021-05-21 20:24:20,490 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 [2021-05-21 20:24:20,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2021-05-21 20:24:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1142. [2021-05-21 20:24:20,512 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) [2021-05-21 20:24:20,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4390 transitions. [2021-05-21 20:24:20,514 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4390 transitions. Word has length 25 [2021-05-21 20:24:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:20,514 INFO L482 AbstractCegarLoop]: Abstraction has 1142 states and 4390 transitions. [2021-05-21 20:24:20,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4390 transitions. [2021-05-21 20:24:20,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:20,516 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:20,516 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:20,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable609 [2021-05-21 20:24:20,516 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]=== [2021-05-21 20:24:20,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:20,516 INFO L82 PathProgramCache]: Analyzing trace with hash -514499105, now seen corresponding path program 606 times [2021-05-21 20:24:20,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:20,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776857143] [2021-05-21 20:24:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:20,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:20,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776857143] [2021-05-21 20:24:20,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776857143] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:20,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:20,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:20,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61377665] [2021-05-21 20:24:20,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:20,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:20,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:20,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:20,592 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) [2021-05-21 20:24:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:20,647 INFO L93 Difference]: Finished difference Result 2089 states and 7549 transitions. [2021-05-21 20:24:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:20,647 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 [2021-05-21 20:24:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:20,650 INFO L225 Difference]: With dead ends: 2089 [2021-05-21 20:24:20,650 INFO L226 Difference]: Without dead ends: 1864 [2021-05-21 20:24:20,650 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 [2021-05-21 20:24:20,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-05-21 20:24:20,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1100. [2021-05-21 20:24:20,672 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) [2021-05-21 20:24:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4259 transitions. [2021-05-21 20:24:20,674 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4259 transitions. Word has length 25 [2021-05-21 20:24:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:20,674 INFO L482 AbstractCegarLoop]: Abstraction has 1100 states and 4259 transitions. [2021-05-21 20:24:20,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4259 transitions. [2021-05-21 20:24:20,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:20,675 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:20,675 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:20,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable610 [2021-05-21 20:24:20,675 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]=== [2021-05-21 20:24:20,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:20,675 INFO L82 PathProgramCache]: Analyzing trace with hash 540793375, now seen corresponding path program 607 times [2021-05-21 20:24:20,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:20,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041336989] [2021-05-21 20:24:20,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:20,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:20,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041336989] [2021-05-21 20:24:20,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041336989] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:20,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:20,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:20,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250856969] [2021-05-21 20:24:20,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:20,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:20,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:20,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:20,749 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) [2021-05-21 20:24:20,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:20,804 INFO L93 Difference]: Finished difference Result 2085 states and 7571 transitions. [2021-05-21 20:24:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:20,807 INFO L225 Difference]: With dead ends: 2085 [2021-05-21 20:24:20,807 INFO L226 Difference]: Without dead ends: 1896 [2021-05-21 20:24:20,807 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 [2021-05-21 20:24:20,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2021-05-21 20:24:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1142. [2021-05-21 20:24:20,829 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) [2021-05-21 20:24:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4408 transitions. [2021-05-21 20:24:20,831 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4408 transitions. Word has length 25 [2021-05-21 20:24:20,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:20,831 INFO L482 AbstractCegarLoop]: Abstraction has 1142 states and 4408 transitions. [2021-05-21 20:24:20,831 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) [2021-05-21 20:24:20,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4408 transitions. [2021-05-21 20:24:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:20,833 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:20,833 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] [2021-05-21 20:24:20,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable611 [2021-05-21 20:24:20,833 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]=== [2021-05-21 20:24:20,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:20,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1502543619, now seen corresponding path program 608 times [2021-05-21 20:24:20,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:20,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451412375] [2021-05-21 20:24:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:20,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:20,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451412375] [2021-05-21 20:24:20,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451412375] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:20,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:20,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:20,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985609886] [2021-05-21 20:24:20,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:20,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:20,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:20,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:20,909 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) [2021-05-21 20:24:20,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:20,965 INFO L93 Difference]: Finished difference Result 2083 states and 7536 transitions. [2021-05-21 20:24:20,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:20,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:20,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:20,969 INFO L225 Difference]: With dead ends: 2083 [2021-05-21 20:24:20,969 INFO L226 Difference]: Without dead ends: 1866 [2021-05-21 20:24:20,969 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 [2021-05-21 20:24:20,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-05-21 20:24:20,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1112. [2021-05-21 20:24:20,991 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) [2021-05-21 20:24:20,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4303 transitions. [2021-05-21 20:24:20,992 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4303 transitions. Word has length 25 [2021-05-21 20:24:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:20,993 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4303 transitions. [2021-05-21 20:24:20,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4303 transitions. [2021-05-21 20:24:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:20,994 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:20,994 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:20,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable612 [2021-05-21 20:24:20,994 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]=== [2021-05-21 20:24:20,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:20,994 INFO L82 PathProgramCache]: Analyzing trace with hash -255233505, now seen corresponding path program 609 times [2021-05-21 20:24:20,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:20,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79054980] [2021-05-21 20:24:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:21,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:21,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79054980] [2021-05-21 20:24:21,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79054980] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:21,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:21,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:21,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741914281] [2021-05-21 20:24:21,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:21,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:21,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:21,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:21,079 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) [2021-05-21 20:24:21,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:21,134 INFO L93 Difference]: Finished difference Result 2067 states and 7496 transitions. [2021-05-21 20:24:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:21,134 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 [2021-05-21 20:24:21,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:21,137 INFO L225 Difference]: With dead ends: 2067 [2021-05-21 20:24:21,137 INFO L226 Difference]: Without dead ends: 1878 [2021-05-21 20:24:21,137 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 [2021-05-21 20:24:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2021-05-21 20:24:21,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1136. [2021-05-21 20:24:21,159 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) [2021-05-21 20:24:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4379 transitions. [2021-05-21 20:24:21,161 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4379 transitions. Word has length 25 [2021-05-21 20:24:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:21,161 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4379 transitions. [2021-05-21 20:24:21,161 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) [2021-05-21 20:24:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4379 transitions. [2021-05-21 20:24:21,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:21,163 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:21,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:21,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable613 [2021-05-21 20:24:21,163 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]=== [2021-05-21 20:24:21,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:21,163 INFO L82 PathProgramCache]: Analyzing trace with hash 300554783, now seen corresponding path program 610 times [2021-05-21 20:24:21,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:21,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143554652] [2021-05-21 20:24:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:21,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:21,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143554652] [2021-05-21 20:24:21,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143554652] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:21,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:21,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:21,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539723779] [2021-05-21 20:24:21,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:21,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:21,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:21,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:21,246 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) [2021-05-21 20:24:21,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:21,301 INFO L93 Difference]: Finished difference Result 2053 states and 7427 transitions. [2021-05-21 20:24:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:21,302 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 [2021-05-21 20:24:21,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:21,305 INFO L225 Difference]: With dead ends: 2053 [2021-05-21 20:24:21,305 INFO L226 Difference]: Without dead ends: 1854 [2021-05-21 20:24:21,305 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 [2021-05-21 20:24:21,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2021-05-21 20:24:21,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1112. [2021-05-21 20:24:21,326 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) [2021-05-21 20:24:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4291 transitions. [2021-05-21 20:24:21,328 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4291 transitions. Word has length 25 [2021-05-21 20:24:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:21,328 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4291 transitions. [2021-05-21 20:24:21,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4291 transitions. [2021-05-21 20:24:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:21,330 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:21,330 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] [2021-05-21 20:24:21,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable614 [2021-05-21 20:24:21,330 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]=== [2021-05-21 20:24:21,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:21,330 INFO L82 PathProgramCache]: Analyzing trace with hash 727114109, now seen corresponding path program 611 times [2021-05-21 20:24:21,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:21,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121942617] [2021-05-21 20:24:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:21,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:21,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121942617] [2021-05-21 20:24:21,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121942617] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:21,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:21,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:21,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082756720] [2021-05-21 20:24:21,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:21,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:21,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:21,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:21,405 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) [2021-05-21 20:24:21,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:21,458 INFO L93 Difference]: Finished difference Result 2063 states and 7474 transitions. [2021-05-21 20:24:21,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:21,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:21,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:21,462 INFO L225 Difference]: With dead ends: 2063 [2021-05-21 20:24:21,462 INFO L226 Difference]: Without dead ends: 1876 [2021-05-21 20:24:21,462 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 [2021-05-21 20:24:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2021-05-21 20:24:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1136. [2021-05-21 20:24:21,484 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) [2021-05-21 20:24:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4367 transitions. [2021-05-21 20:24:21,486 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4367 transitions. Word has length 25 [2021-05-21 20:24:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:21,486 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4367 transitions. [2021-05-21 20:24:21,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4367 transitions. [2021-05-21 20:24:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:21,488 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:21,488 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:21,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable615 [2021-05-21 20:24:21,488 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]=== [2021-05-21 20:24:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:21,488 INFO L82 PathProgramCache]: Analyzing trace with hash 520306143, now seen corresponding path program 612 times [2021-05-21 20:24:21,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:21,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325950670] [2021-05-21 20:24:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:21,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:21,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325950670] [2021-05-21 20:24:21,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325950670] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:21,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:21,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:21,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072608872] [2021-05-21 20:24:21,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:21,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:21,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:21,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:21,562 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) [2021-05-21 20:24:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:21,616 INFO L93 Difference]: Finished difference Result 2051 states and 7410 transitions. [2021-05-21 20:24:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:21,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:21,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:21,620 INFO L225 Difference]: With dead ends: 2051 [2021-05-21 20:24:21,620 INFO L226 Difference]: Without dead ends: 1840 [2021-05-21 20:24:21,620 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2021-05-21 20:24:21,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1100. [2021-05-21 20:24:21,641 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) [2021-05-21 20:24:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4253 transitions. [2021-05-21 20:24:21,643 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4253 transitions. Word has length 25 [2021-05-21 20:24:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:21,643 INFO L482 AbstractCegarLoop]: Abstraction has 1100 states and 4253 transitions. [2021-05-21 20:24:21,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4253 transitions. [2021-05-21 20:24:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:21,645 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:21,645 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:21,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable616 [2021-05-21 20:24:21,645 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]=== [2021-05-21 20:24:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:21,645 INFO L82 PathProgramCache]: Analyzing trace with hash -315954691, now seen corresponding path program 613 times [2021-05-21 20:24:21,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:21,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103538291] [2021-05-21 20:24:21,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:21,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:21,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103538291] [2021-05-21 20:24:21,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103538291] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:21,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:21,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:21,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213386477] [2021-05-21 20:24:21,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:21,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:21,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:21,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:21,740 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) [2021-05-21 20:24:21,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:21,795 INFO L93 Difference]: Finished difference Result 2073 states and 7527 transitions. [2021-05-21 20:24:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:21,796 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 [2021-05-21 20:24:21,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:21,799 INFO L225 Difference]: With dead ends: 2073 [2021-05-21 20:24:21,799 INFO L226 Difference]: Without dead ends: 1884 [2021-05-21 20:24:21,799 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 [2021-05-21 20:24:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-05-21 20:24:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1140. [2021-05-21 20:24:21,821 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) [2021-05-21 20:24:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 4397 transitions. [2021-05-21 20:24:21,823 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 4397 transitions. Word has length 25 [2021-05-21 20:24:21,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:21,823 INFO L482 AbstractCegarLoop]: Abstraction has 1140 states and 4397 transitions. [2021-05-21 20:24:21,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 4397 transitions. [2021-05-21 20:24:21,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:21,824 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:21,824 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] [2021-05-21 20:24:21,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable617 [2021-05-21 20:24:21,825 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]=== [2021-05-21 20:24:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:21,825 INFO L82 PathProgramCache]: Analyzing trace with hash 876511741, now seen corresponding path program 614 times [2021-05-21 20:24:21,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:21,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883974248] [2021-05-21 20:24:21,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:21,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:21,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883974248] [2021-05-21 20:24:21,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883974248] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:21,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:21,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:21,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824123933] [2021-05-21 20:24:21,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:21,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:21,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:21,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:21,904 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) [2021-05-21 20:24:21,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:21,960 INFO L93 Difference]: Finished difference Result 2067 states and 7482 transitions. [2021-05-21 20:24:21,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:21,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:21,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:21,965 INFO L225 Difference]: With dead ends: 2067 [2021-05-21 20:24:21,965 INFO L226 Difference]: Without dead ends: 1856 [2021-05-21 20:24:21,965 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 [2021-05-21 20:24:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-05-21 20:24:21,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1112. [2021-05-21 20:24:21,987 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) [2021-05-21 20:24:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4297 transitions. [2021-05-21 20:24:21,989 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4297 transitions. Word has length 25 [2021-05-21 20:24:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:21,989 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4297 transitions. [2021-05-21 20:24:21,989 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) [2021-05-21 20:24:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4297 transitions. [2021-05-21 20:24:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:21,990 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:21,990 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:21,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable618 [2021-05-21 20:24:21,990 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]=== [2021-05-21 20:24:21,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:21,990 INFO L82 PathProgramCache]: Analyzing trace with hash -796856737, now seen corresponding path program 615 times [2021-05-21 20:24:21,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:21,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889092766] [2021-05-21 20:24:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:22,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:22,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889092766] [2021-05-21 20:24:22,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889092766] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:22,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:22,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:22,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645241313] [2021-05-21 20:24:22,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:22,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:22,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:22,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:22,075 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) [2021-05-21 20:24:22,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:22,131 INFO L93 Difference]: Finished difference Result 2061 states and 7471 transitions. [2021-05-21 20:24:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:22,132 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 [2021-05-21 20:24:22,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:22,135 INFO L225 Difference]: With dead ends: 2061 [2021-05-21 20:24:22,135 INFO L226 Difference]: Without dead ends: 1872 [2021-05-21 20:24:22,135 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 [2021-05-21 20:24:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2021-05-21 20:24:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1136. [2021-05-21 20:24:22,157 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) [2021-05-21 20:24:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4373 transitions. [2021-05-21 20:24:22,159 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4373 transitions. Word has length 25 [2021-05-21 20:24:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:22,159 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4373 transitions. [2021-05-21 20:24:22,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4373 transitions. [2021-05-21 20:24:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:22,160 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:22,160 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] [2021-05-21 20:24:22,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable619 [2021-05-21 20:24:22,160 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]=== [2021-05-21 20:24:22,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:22,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1722506755, now seen corresponding path program 616 times [2021-05-21 20:24:22,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:22,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137533455] [2021-05-21 20:24:22,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:22,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:22,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:22,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137533455] [2021-05-21 20:24:22,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137533455] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:22,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:22,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:22,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995767701] [2021-05-21 20:24:22,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:22,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:22,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:22,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:22,264 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) [2021-05-21 20:24:22,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:22,320 INFO L93 Difference]: Finished difference Result 2047 states and 7402 transitions. [2021-05-21 20:24:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:22,320 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 [2021-05-21 20:24:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:22,323 INFO L225 Difference]: With dead ends: 2047 [2021-05-21 20:24:22,323 INFO L226 Difference]: Without dead ends: 1848 [2021-05-21 20:24:22,323 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2021-05-21 20:24:22,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1112. [2021-05-21 20:24:22,345 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) [2021-05-21 20:24:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4285 transitions. [2021-05-21 20:24:22,347 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4285 transitions. Word has length 25 [2021-05-21 20:24:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:22,347 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4285 transitions. [2021-05-21 20:24:22,347 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) [2021-05-21 20:24:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4285 transitions. [2021-05-21 20:24:22,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:22,348 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:22,348 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:22,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable620 [2021-05-21 20:24:22,348 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]=== [2021-05-21 20:24:22,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:22,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1881855491, now seen corresponding path program 617 times [2021-05-21 20:24:22,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:22,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685000334] [2021-05-21 20:24:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:22,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:22,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685000334] [2021-05-21 20:24:22,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685000334] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:22,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:22,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:22,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743444397] [2021-05-21 20:24:22,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:22,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:22,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:22,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:22,424 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) [2021-05-21 20:24:22,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:22,487 INFO L93 Difference]: Finished difference Result 2049 states and 7425 transitions. [2021-05-21 20:24:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:22,488 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 [2021-05-21 20:24:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:22,491 INFO L225 Difference]: With dead ends: 2049 [2021-05-21 20:24:22,491 INFO L226 Difference]: Without dead ends: 1866 [2021-05-21 20:24:22,491 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 [2021-05-21 20:24:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-05-21 20:24:22,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1136. [2021-05-21 20:24:22,513 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) [2021-05-21 20:24:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4361 transitions. [2021-05-21 20:24:22,515 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4361 transitions. Word has length 25 [2021-05-21 20:24:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:22,515 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4361 transitions. [2021-05-21 20:24:22,515 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) [2021-05-21 20:24:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4361 transitions. [2021-05-21 20:24:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:22,516 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:22,516 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:22,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable621 [2021-05-21 20:24:22,517 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]=== [2021-05-21 20:24:22,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:22,517 INFO L82 PathProgramCache]: Analyzing trace with hash -800792865, now seen corresponding path program 618 times [2021-05-21 20:24:22,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:22,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456883031] [2021-05-21 20:24:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:22,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:22,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456883031] [2021-05-21 20:24:22,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456883031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:22,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:22,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:22,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115476044] [2021-05-21 20:24:22,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:22,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:22,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:22,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:22,593 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) [2021-05-21 20:24:22,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:22,650 INFO L93 Difference]: Finished difference Result 2041 states and 7373 transitions. [2021-05-21 20:24:22,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:22,651 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 [2021-05-21 20:24:22,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:22,654 INFO L225 Difference]: With dead ends: 2041 [2021-05-21 20:24:22,654 INFO L226 Difference]: Without dead ends: 1830 [2021-05-21 20:24:22,654 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 [2021-05-21 20:24:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2021-05-21 20:24:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1100. [2021-05-21 20:24:22,676 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) [2021-05-21 20:24:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4247 transitions. [2021-05-21 20:24:22,677 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4247 transitions. Word has length 25 [2021-05-21 20:24:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:22,678 INFO L482 AbstractCegarLoop]: Abstraction has 1100 states and 4247 transitions. [2021-05-21 20:24:22,678 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) [2021-05-21 20:24:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4247 transitions. [2021-05-21 20:24:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:22,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:22,679 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] [2021-05-21 20:24:22,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable622 [2021-05-21 20:24:22,679 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]=== [2021-05-21 20:24:22,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:22,679 INFO L82 PathProgramCache]: Analyzing trace with hash 656441819, now seen corresponding path program 619 times [2021-05-21 20:24:22,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:22,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69631274] [2021-05-21 20:24:22,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:22,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:22,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69631274] [2021-05-21 20:24:22,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69631274] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:22,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:22,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:22,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986417049] [2021-05-21 20:24:22,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:22,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:22,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:22,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:22,754 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) [2021-05-21 20:24:22,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:22,809 INFO L93 Difference]: Finished difference Result 2067 states and 7506 transitions. [2021-05-21 20:24:22,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:22,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:22,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:22,812 INFO L225 Difference]: With dead ends: 2067 [2021-05-21 20:24:22,812 INFO L226 Difference]: Without dead ends: 1880 [2021-05-21 20:24:22,812 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 [2021-05-21 20:24:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-05-21 20:24:22,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1140. [2021-05-21 20:24:22,834 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) [2021-05-21 20:24:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 4391 transitions. [2021-05-21 20:24:22,836 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 4391 transitions. Word has length 25 [2021-05-21 20:24:22,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:22,836 INFO L482 AbstractCegarLoop]: Abstraction has 1140 states and 4391 transitions. [2021-05-21 20:24:22,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 4391 transitions. [2021-05-21 20:24:22,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:22,838 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:22,838 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:22,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable623 [2021-05-21 20:24:22,838 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]=== [2021-05-21 20:24:22,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:22,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1737504445, now seen corresponding path program 620 times [2021-05-21 20:24:22,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:22,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239343066] [2021-05-21 20:24:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:22,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:22,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239343066] [2021-05-21 20:24:22,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239343066] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:22,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:22,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:22,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568712051] [2021-05-21 20:24:22,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:22,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:22,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:22,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:22,913 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) [2021-05-21 20:24:22,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:22,965 INFO L93 Difference]: Finished difference Result 2063 states and 7466 transitions. [2021-05-21 20:24:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:22,965 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 [2021-05-21 20:24:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:22,969 INFO L225 Difference]: With dead ends: 2063 [2021-05-21 20:24:22,969 INFO L226 Difference]: Without dead ends: 1852 [2021-05-21 20:24:22,969 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 [2021-05-21 20:24:22,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2021-05-21 20:24:22,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1112. [2021-05-21 20:24:22,990 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) [2021-05-21 20:24:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4291 transitions. [2021-05-21 20:24:22,992 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4291 transitions. Word has length 25 [2021-05-21 20:24:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:22,992 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4291 transitions. [2021-05-21 20:24:22,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:22,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4291 transitions. [2021-05-21 20:24:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:22,994 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:22,994 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:22,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable624 [2021-05-21 20:24:22,994 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]=== [2021-05-21 20:24:22,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:22,994 INFO L82 PathProgramCache]: Analyzing trace with hash 175539773, now seen corresponding path program 621 times [2021-05-21 20:24:22,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:22,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652712418] [2021-05-21 20:24:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:23,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:23,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652712418] [2021-05-21 20:24:23,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652712418] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:23,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:23,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:23,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306503668] [2021-05-21 20:24:23,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:23,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:23,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:23,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:23,070 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) [2021-05-21 20:24:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:23,146 INFO L93 Difference]: Finished difference Result 2055 states and 7450 transitions. [2021-05-21 20:24:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:23,146 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 [2021-05-21 20:24:23,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:23,150 INFO L225 Difference]: With dead ends: 2055 [2021-05-21 20:24:23,150 INFO L226 Difference]: Without dead ends: 1868 [2021-05-21 20:24:23,150 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 [2021-05-21 20:24:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-05-21 20:24:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1136. [2021-05-21 20:24:23,172 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) [2021-05-21 20:24:23,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4367 transitions. [2021-05-21 20:24:23,174 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4367 transitions. Word has length 25 [2021-05-21 20:24:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:23,174 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4367 transitions. [2021-05-21 20:24:23,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4367 transitions. [2021-05-21 20:24:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:23,175 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:23,175 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:23,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable625 [2021-05-21 20:24:23,175 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]=== [2021-05-21 20:24:23,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:23,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1512706499, now seen corresponding path program 622 times [2021-05-21 20:24:23,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:23,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155859024] [2021-05-21 20:24:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:23,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:23,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155859024] [2021-05-21 20:24:23,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155859024] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:23,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:23,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:23,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019081240] [2021-05-21 20:24:23,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:23,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:23,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:23,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:23,250 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) [2021-05-21 20:24:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:23,310 INFO L93 Difference]: Finished difference Result 2043 states and 7386 transitions. [2021-05-21 20:24:23,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:23,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:23,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:23,314 INFO L225 Difference]: With dead ends: 2043 [2021-05-21 20:24:23,314 INFO L226 Difference]: Without dead ends: 1844 [2021-05-21 20:24:23,314 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 [2021-05-21 20:24:23,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2021-05-21 20:24:23,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1112. [2021-05-21 20:24:23,336 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) [2021-05-21 20:24:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4279 transitions. [2021-05-21 20:24:23,338 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4279 transitions. Word has length 25 [2021-05-21 20:24:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:23,338 INFO L482 AbstractCegarLoop]: Abstraction has 1112 states and 4279 transitions. [2021-05-21 20:24:23,338 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) [2021-05-21 20:24:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4279 transitions. [2021-05-21 20:24:23,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:23,339 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:23,339 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:23,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable626 [2021-05-21 20:24:23,340 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]=== [2021-05-21 20:24:23,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:23,340 INFO L82 PathProgramCache]: Analyzing trace with hash 563544735, now seen corresponding path program 623 times [2021-05-21 20:24:23,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:23,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339661065] [2021-05-21 20:24:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:23,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:23,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339661065] [2021-05-21 20:24:23,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339661065] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:23,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:23,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:23,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884382678] [2021-05-21 20:24:23,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:23,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:23,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:23,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:23,415 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) [2021-05-21 20:24:23,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:23,469 INFO L93 Difference]: Finished difference Result 2047 states and 7414 transitions. [2021-05-21 20:24:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:23,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:23,473 INFO L225 Difference]: With dead ends: 2047 [2021-05-21 20:24:23,473 INFO L226 Difference]: Without dead ends: 1864 [2021-05-21 20:24:23,473 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 [2021-05-21 20:24:23,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-05-21 20:24:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1136. [2021-05-21 20:24:23,495 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) [2021-05-21 20:24:23,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4355 transitions. [2021-05-21 20:24:23,497 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4355 transitions. Word has length 25 [2021-05-21 20:24:23,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:23,497 INFO L482 AbstractCegarLoop]: Abstraction has 1136 states and 4355 transitions. [2021-05-21 20:24:23,498 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) [2021-05-21 20:24:23,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4355 transitions. [2021-05-21 20:24:23,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:23,499 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:23,499 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] [2021-05-21 20:24:23,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable627 [2021-05-21 20:24:23,499 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]=== [2021-05-21 20:24:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:23,499 INFO L82 PathProgramCache]: Analyzing trace with hash -283252227, now seen corresponding path program 624 times [2021-05-21 20:24:23,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:23,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216706637] [2021-05-21 20:24:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:23,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:23,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216706637] [2021-05-21 20:24:23,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216706637] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:23,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:23,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:23,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057303521] [2021-05-21 20:24:23,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:23,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:23,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:23,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:23,576 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) [2021-05-21 20:24:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:23,633 INFO L93 Difference]: Finished difference Result 2039 states and 7362 transitions. [2021-05-21 20:24:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:23,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:23,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:23,637 INFO L225 Difference]: With dead ends: 2039 [2021-05-21 20:24:23,637 INFO L226 Difference]: Without dead ends: 1822 [2021-05-21 20:24:23,637 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 [2021-05-21 20:24:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2021-05-21 20:24:23,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1094. [2021-05-21 20:24:23,658 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) [2021-05-21 20:24:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 4231 transitions. [2021-05-21 20:24:23,660 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 4231 transitions. Word has length 25 [2021-05-21 20:24:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:23,660 INFO L482 AbstractCegarLoop]: Abstraction has 1094 states and 4231 transitions. [2021-05-21 20:24:23,660 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) [2021-05-21 20:24:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 4231 transitions. [2021-05-21 20:24:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:23,662 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:23,662 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] [2021-05-21 20:24:23,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable628 [2021-05-21 20:24:23,662 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]=== [2021-05-21 20:24:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:23,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1270425503, now seen corresponding path program 625 times [2021-05-21 20:24:23,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:23,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614228075] [2021-05-21 20:24:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:23,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:23,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614228075] [2021-05-21 20:24:23,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614228075] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:23,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:23,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:23,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284700556] [2021-05-21 20:24:23,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:23,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:23,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:23,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:23,749 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) [2021-05-21 20:24:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:23,806 INFO L93 Difference]: Finished difference Result 2083 states and 7547 transitions. [2021-05-21 20:24:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:23,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:23,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:23,810 INFO L225 Difference]: With dead ends: 2083 [2021-05-21 20:24:23,810 INFO L226 Difference]: Without dead ends: 1894 [2021-05-21 20:24:23,810 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 [2021-05-21 20:24:23,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2021-05-21 20:24:23,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1124. [2021-05-21 20:24:23,832 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) [2021-05-21 20:24:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 4324 transitions. [2021-05-21 20:24:23,834 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 4324 transitions. Word has length 25 [2021-05-21 20:24:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:23,834 INFO L482 AbstractCegarLoop]: Abstraction has 1124 states and 4324 transitions. [2021-05-21 20:24:23,834 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) [2021-05-21 20:24:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 4324 transitions. [2021-05-21 20:24:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:23,835 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:23,835 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] [2021-05-21 20:24:23,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable629 [2021-05-21 20:24:23,835 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]=== [2021-05-21 20:24:23,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:23,835 INFO L82 PathProgramCache]: Analyzing trace with hash -772911491, now seen corresponding path program 626 times [2021-05-21 20:24:23,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:23,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627921007] [2021-05-21 20:24:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:23,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:23,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627921007] [2021-05-21 20:24:23,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627921007] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:23,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:23,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:23,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774650504] [2021-05-21 20:24:23,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:23,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:23,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:23,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:23,910 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) [2021-05-21 20:24:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:23,969 INFO L93 Difference]: Finished difference Result 2081 states and 7512 transitions. [2021-05-21 20:24:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:23,969 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 [2021-05-21 20:24:23,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:23,972 INFO L225 Difference]: With dead ends: 2081 [2021-05-21 20:24:23,972 INFO L226 Difference]: Without dead ends: 1864 [2021-05-21 20:24:23,973 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 [2021-05-21 20:24:23,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-05-21 20:24:23,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1094. [2021-05-21 20:24:23,994 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) [2021-05-21 20:24:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 4217 transitions. [2021-05-21 20:24:23,996 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 4217 transitions. Word has length 25 [2021-05-21 20:24:23,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:23,996 INFO L482 AbstractCegarLoop]: Abstraction has 1094 states and 4217 transitions. [2021-05-21 20:24:23,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:23,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 4217 transitions. [2021-05-21 20:24:23,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:23,998 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:23,998 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] [2021-05-21 20:24:23,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable630 [2021-05-21 20:24:23,998 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]=== [2021-05-21 20:24:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:23,998 INFO L82 PathProgramCache]: Analyzing trace with hash 423628541, now seen corresponding path program 627 times [2021-05-21 20:24:23,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:23,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451396812] [2021-05-21 20:24:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:24,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:24,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451396812] [2021-05-21 20:24:24,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451396812] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:24,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:24,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:24,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947485056] [2021-05-21 20:24:24,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:24,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:24,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:24,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:24,074 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) [2021-05-21 20:24:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:24,128 INFO L93 Difference]: Finished difference Result 2077 states and 7514 transitions. [2021-05-21 20:24:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:24,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:24,131 INFO L225 Difference]: With dead ends: 2077 [2021-05-21 20:24:24,131 INFO L226 Difference]: Without dead ends: 1888 [2021-05-21 20:24:24,132 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 [2021-05-21 20:24:24,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2021-05-21 20:24:24,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1122. [2021-05-21 20:24:24,154 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) [2021-05-21 20:24:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4305 transitions. [2021-05-21 20:24:24,156 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4305 transitions. Word has length 25 [2021-05-21 20:24:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:24,156 INFO L482 AbstractCegarLoop]: Abstraction has 1122 states and 4305 transitions. [2021-05-21 20:24:24,156 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) [2021-05-21 20:24:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4305 transitions. [2021-05-21 20:24:24,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:24,157 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:24,157 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] [2021-05-21 20:24:24,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable631 [2021-05-21 20:24:24,157 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]=== [2021-05-21 20:24:24,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:24,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1616094973, now seen corresponding path program 628 times [2021-05-21 20:24:24,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:24,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590877473] [2021-05-21 20:24:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:24,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:24,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590877473] [2021-05-21 20:24:24,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590877473] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:24,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:24,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:24,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947681180] [2021-05-21 20:24:24,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:24,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:24,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:24,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:24,233 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) [2021-05-21 20:24:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:24,288 INFO L93 Difference]: Finished difference Result 2071 states and 7469 transitions. [2021-05-21 20:24:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:24,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:24,291 INFO L225 Difference]: With dead ends: 2071 [2021-05-21 20:24:24,291 INFO L226 Difference]: Without dead ends: 1860 [2021-05-21 20:24:24,292 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 [2021-05-21 20:24:24,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2021-05-21 20:24:24,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1094. [2021-05-21 20:24:24,313 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) [2021-05-21 20:24:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 4203 transitions. [2021-05-21 20:24:24,315 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 4203 transitions. Word has length 25 [2021-05-21 20:24:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:24,315 INFO L482 AbstractCegarLoop]: Abstraction has 1094 states and 4203 transitions. [2021-05-21 20:24:24,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:24,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 4203 transitions. [2021-05-21 20:24:24,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:24,316 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:24,316 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] [2021-05-21 20:24:24,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable632 [2021-05-21 20:24:24,317 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]=== [2021-05-21 20:24:24,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:24,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1405976155, now seen corresponding path program 629 times [2021-05-21 20:24:24,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:24,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531313767] [2021-05-21 20:24:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:24,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:24,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531313767] [2021-05-21 20:24:24,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531313767] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:24,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:24,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:24,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588360636] [2021-05-21 20:24:24,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:24,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:24,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:24,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:24,392 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) [2021-05-21 20:24:24,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:24,448 INFO L93 Difference]: Finished difference Result 2073 states and 7490 transitions. [2021-05-21 20:24:24,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:24,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:24,451 INFO L225 Difference]: With dead ends: 2073 [2021-05-21 20:24:24,451 INFO L226 Difference]: Without dead ends: 1886 [2021-05-21 20:24:24,451 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 [2021-05-21 20:24:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-05-21 20:24:24,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1122. [2021-05-21 20:24:24,473 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) [2021-05-21 20:24:24,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4291 transitions. [2021-05-21 20:24:24,475 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4291 transitions. Word has length 25 [2021-05-21 20:24:24,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:24,475 INFO L482 AbstractCegarLoop]: Abstraction has 1122 states and 4291 transitions. [2021-05-21 20:24:24,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:24,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4291 transitions. [2021-05-21 20:24:24,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:24,476 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:24,476 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:24,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable633 [2021-05-21 20:24:24,476 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]=== [2021-05-21 20:24:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:24,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1807928515, now seen corresponding path program 630 times [2021-05-21 20:24:24,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:24,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868434688] [2021-05-21 20:24:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:24,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:24,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868434688] [2021-05-21 20:24:24,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868434688] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:24,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:24,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:24,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010106390] [2021-05-21 20:24:24,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:24,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:24,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:24,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:24,553 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) [2021-05-21 20:24:24,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:24,608 INFO L93 Difference]: Finished difference Result 2069 states and 7450 transitions. [2021-05-21 20:24:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:24,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:24,612 INFO L225 Difference]: With dead ends: 2069 [2021-05-21 20:24:24,612 INFO L226 Difference]: Without dead ends: 1844 [2021-05-21 20:24:24,612 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 [2021-05-21 20:24:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2021-05-21 20:24:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1080. [2021-05-21 20:24:24,633 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) [2021-05-21 20:24:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 4159 transitions. [2021-05-21 20:24:24,635 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 4159 transitions. Word has length 25 [2021-05-21 20:24:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:24,635 INFO L482 AbstractCegarLoop]: Abstraction has 1080 states and 4159 transitions. [2021-05-21 20:24:24,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 4159 transitions. [2021-05-21 20:24:24,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:24,637 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:24,637 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:24,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable634 [2021-05-21 20:24:24,637 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]=== [2021-05-21 20:24:24,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:24,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1591582817, now seen corresponding path program 631 times [2021-05-21 20:24:24,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:24,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466007214] [2021-05-21 20:24:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:24,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:24,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466007214] [2021-05-21 20:24:24,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466007214] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:24,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:24,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:24,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117465120] [2021-05-21 20:24:24,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:24,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:24,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:24,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:24,713 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) [2021-05-21 20:24:24,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:24,770 INFO L93 Difference]: Finished difference Result 2170 states and 7829 transitions. [2021-05-21 20:24:24,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:24,770 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 [2021-05-21 20:24:24,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:24,774 INFO L225 Difference]: With dead ends: 2170 [2021-05-21 20:24:24,774 INFO L226 Difference]: Without dead ends: 1981 [2021-05-21 20:24:24,774 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 [2021-05-21 20:24:24,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2021-05-21 20:24:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1149. [2021-05-21 20:24:24,796 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) [2021-05-21 20:24:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 4405 transitions. [2021-05-21 20:24:24,798 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 4405 transitions. Word has length 25 [2021-05-21 20:24:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:24,798 INFO L482 AbstractCegarLoop]: Abstraction has 1149 states and 4405 transitions. [2021-05-21 20:24:24,798 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) [2021-05-21 20:24:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 4405 transitions. [2021-05-21 20:24:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:24,800 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:24,800 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] [2021-05-21 20:24:24,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable635 [2021-05-21 20:24:24,800 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]=== [2021-05-21 20:24:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash 660047485, now seen corresponding path program 632 times [2021-05-21 20:24:24,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:24,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302249528] [2021-05-21 20:24:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:24,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:24,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302249528] [2021-05-21 20:24:24,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302249528] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:24,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:24,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:24,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390869091] [2021-05-21 20:24:24,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:24,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:24,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:24,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:24,876 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) [2021-05-21 20:24:24,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:24,933 INFO L93 Difference]: Finished difference Result 2168 states and 7794 transitions. [2021-05-21 20:24:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:24,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:24,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:24,937 INFO L225 Difference]: With dead ends: 2168 [2021-05-21 20:24:24,937 INFO L226 Difference]: Without dead ends: 1951 [2021-05-21 20:24:24,937 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 [2021-05-21 20:24:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2021-05-21 20:24:24,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1119. [2021-05-21 20:24:24,958 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) [2021-05-21 20:24:24,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 4297 transitions. [2021-05-21 20:24:24,960 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 4297 transitions. Word has length 25 [2021-05-21 20:24:24,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:24,961 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 4297 transitions. [2021-05-21 20:24:24,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:24,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 4297 transitions. [2021-05-21 20:24:24,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:24,962 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:24,962 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] [2021-05-21 20:24:24,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable636 [2021-05-21 20:24:24,962 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]=== [2021-05-21 20:24:24,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:24,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1165842529, now seen corresponding path program 633 times [2021-05-21 20:24:24,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:24,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882341056] [2021-05-21 20:24:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:25,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:25,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882341056] [2021-05-21 20:24:25,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882341056] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:25,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:25,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:25,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764210986] [2021-05-21 20:24:25,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:25,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:25,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:25,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:25,040 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) [2021-05-21 20:24:25,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:25,099 INFO L93 Difference]: Finished difference Result 2176 states and 7827 transitions. [2021-05-21 20:24:25,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:25,099 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 [2021-05-21 20:24:25,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:25,103 INFO L225 Difference]: With dead ends: 2176 [2021-05-21 20:24:25,103 INFO L226 Difference]: Without dead ends: 1987 [2021-05-21 20:24:25,103 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 [2021-05-21 20:24:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-05-21 20:24:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1182. [2021-05-21 20:24:25,126 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) [2021-05-21 20:24:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 4504 transitions. [2021-05-21 20:24:25,128 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 4504 transitions. Word has length 25 [2021-05-21 20:24:25,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:25,128 INFO L482 AbstractCegarLoop]: Abstraction has 1182 states and 4504 transitions. [2021-05-21 20:24:25,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 4504 transitions. [2021-05-21 20:24:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:25,129 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:25,129 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:25,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable637 [2021-05-21 20:24:25,129 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]=== [2021-05-21 20:24:25,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:25,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1721630817, now seen corresponding path program 634 times [2021-05-21 20:24:25,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:25,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114824448] [2021-05-21 20:24:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:25,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:25,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114824448] [2021-05-21 20:24:25,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114824448] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:25,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:25,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:25,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632588213] [2021-05-21 20:24:25,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:25,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:25,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:25,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:25,217 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) [2021-05-21 20:24:25,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:25,260 INFO L93 Difference]: Finished difference Result 2081 states and 7525 transitions. [2021-05-21 20:24:25,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:25,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:25,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:25,264 INFO L225 Difference]: With dead ends: 2081 [2021-05-21 20:24:25,264 INFO L226 Difference]: Without dead ends: 1796 [2021-05-21 20:24:25,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:25,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2021-05-21 20:24:25,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1119. [2021-05-21 20:24:25,285 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) [2021-05-21 20:24:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 4266 transitions. [2021-05-21 20:24:25,287 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 4266 transitions. Word has length 25 [2021-05-21 20:24:25,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:25,287 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 4266 transitions. [2021-05-21 20:24:25,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 4266 transitions. [2021-05-21 20:24:25,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:25,288 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:25,288 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:25,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable638 [2021-05-21 20:24:25,288 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]=== [2021-05-21 20:24:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:25,289 INFO L82 PathProgramCache]: Analyzing trace with hash -183494915, now seen corresponding path program 635 times [2021-05-21 20:24:25,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:25,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165560328] [2021-05-21 20:24:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:25,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:25,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165560328] [2021-05-21 20:24:25,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165560328] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:25,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:25,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:25,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271314125] [2021-05-21 20:24:25,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:25,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:25,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:25,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:25,367 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) [2021-05-21 20:24:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:25,430 INFO L93 Difference]: Finished difference Result 2157 states and 7740 transitions. [2021-05-21 20:24:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:25,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:25,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:25,434 INFO L225 Difference]: With dead ends: 2157 [2021-05-21 20:24:25,434 INFO L226 Difference]: Without dead ends: 1970 [2021-05-21 20:24:25,434 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 [2021-05-21 20:24:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2021-05-21 20:24:25,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1165. [2021-05-21 20:24:25,457 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) [2021-05-21 20:24:25,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 4423 transitions. [2021-05-21 20:24:25,459 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 4423 transitions. Word has length 25 [2021-05-21 20:24:25,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:25,459 INFO L482 AbstractCegarLoop]: Abstraction has 1165 states and 4423 transitions. [2021-05-21 20:24:25,459 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) [2021-05-21 20:24:25,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 4423 transitions. [2021-05-21 20:24:25,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:25,461 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:25,461 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] [2021-05-21 20:24:25,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable639 [2021-05-21 20:24:25,461 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]=== [2021-05-21 20:24:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:25,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1754082783, now seen corresponding path program 636 times [2021-05-21 20:24:25,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:25,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709029647] [2021-05-21 20:24:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:25,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:25,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709029647] [2021-05-21 20:24:25,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709029647] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:25,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:25,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:25,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846798589] [2021-05-21 20:24:25,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:25,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:25,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:25,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:25,539 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) [2021-05-21 20:24:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:25,585 INFO L93 Difference]: Finished difference Result 2064 states and 7444 transitions. [2021-05-21 20:24:25,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:25,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:25,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:25,588 INFO L225 Difference]: With dead ends: 2064 [2021-05-21 20:24:25,588 INFO L226 Difference]: Without dead ends: 1757 [2021-05-21 20:24:25,588 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:25,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2021-05-21 20:24:25,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1080. [2021-05-21 20:24:25,609 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) [2021-05-21 20:24:25,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 4140 transitions. [2021-05-21 20:24:25,611 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 4140 transitions. Word has length 25 [2021-05-21 20:24:25,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:25,611 INFO L482 AbstractCegarLoop]: Abstraction has 1080 states and 4140 transitions. [2021-05-21 20:24:25,611 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) [2021-05-21 20:24:25,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 4140 transitions. [2021-05-21 20:24:25,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:25,613 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:25,613 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:25,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable640 [2021-05-21 20:24:25,613 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]=== [2021-05-21 20:24:25,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:25,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1846636413, now seen corresponding path program 637 times [2021-05-21 20:24:25,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:25,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551541847] [2021-05-21 20:24:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:25,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:25,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551541847] [2021-05-21 20:24:25,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551541847] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:25,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:25,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:25,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55478972] [2021-05-21 20:24:25,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:25,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:25,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:25,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:25,690 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) [2021-05-21 20:24:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:25,753 INFO L93 Difference]: Finished difference Result 2149 states and 7748 transitions. [2021-05-21 20:24:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:25,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:25,756 INFO L225 Difference]: With dead ends: 2149 [2021-05-21 20:24:25,757 INFO L226 Difference]: Without dead ends: 1960 [2021-05-21 20:24:25,757 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 [2021-05-21 20:24:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2021-05-21 20:24:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1138. [2021-05-21 20:24:25,779 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) [2021-05-21 20:24:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 4357 transitions. [2021-05-21 20:24:25,781 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 4357 transitions. Word has length 25 [2021-05-21 20:24:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:25,781 INFO L482 AbstractCegarLoop]: Abstraction has 1138 states and 4357 transitions. [2021-05-21 20:24:25,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 4357 transitions. [2021-05-21 20:24:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:25,782 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:25,782 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] [2021-05-21 20:24:25,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable641 [2021-05-21 20:24:25,783 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]=== [2021-05-21 20:24:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:25,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1255864451, now seen corresponding path program 638 times [2021-05-21 20:24:25,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:25,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015743820] [2021-05-21 20:24:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:25,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:25,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015743820] [2021-05-21 20:24:25,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015743820] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:25,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:25,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:25,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689332297] [2021-05-21 20:24:25,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:25,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:25,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:25,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:25,856 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) [2021-05-21 20:24:25,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:25,910 INFO L93 Difference]: Finished difference Result 2143 states and 7703 transitions. [2021-05-21 20:24:25,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:25,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:25,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:25,914 INFO L225 Difference]: With dead ends: 2143 [2021-05-21 20:24:25,914 INFO L226 Difference]: Without dead ends: 1932 [2021-05-21 20:24:25,914 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2021-05-21 20:24:25,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1110. [2021-05-21 20:24:25,935 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) [2021-05-21 20:24:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 4255 transitions. [2021-05-21 20:24:25,937 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 4255 transitions. Word has length 25 [2021-05-21 20:24:25,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:25,937 INFO L482 AbstractCegarLoop]: Abstraction has 1110 states and 4255 transitions. [2021-05-21 20:24:25,938 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) [2021-05-21 20:24:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 4255 transitions. [2021-05-21 20:24:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:25,939 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:25,939 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:25,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable642 [2021-05-21 20:24:25,939 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]=== [2021-05-21 20:24:25,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:25,939 INFO L82 PathProgramCache]: Analyzing trace with hash 536055391, now seen corresponding path program 639 times [2021-05-21 20:24:25,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:25,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586192044] [2021-05-21 20:24:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:26,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:26,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586192044] [2021-05-21 20:24:26,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586192044] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:26,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:26,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:26,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133540556] [2021-05-21 20:24:26,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:26,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:26,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:26,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:26,018 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) [2021-05-21 20:24:26,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:26,075 INFO L93 Difference]: Finished difference Result 2161 states and 7766 transitions. [2021-05-21 20:24:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:26,075 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 [2021-05-21 20:24:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:26,078 INFO L225 Difference]: With dead ends: 2161 [2021-05-21 20:24:26,078 INFO L226 Difference]: Without dead ends: 1972 [2021-05-21 20:24:26,079 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 [2021-05-21 20:24:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2021-05-21 20:24:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1173. [2021-05-21 20:24:26,104 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) [2021-05-21 20:24:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 4462 transitions. [2021-05-21 20:24:26,106 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 4462 transitions. Word has length 25 [2021-05-21 20:24:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:26,106 INFO L482 AbstractCegarLoop]: Abstraction has 1173 states and 4462 transitions. [2021-05-21 20:24:26,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 4462 transitions. [2021-05-21 20:24:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:26,108 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:26,108 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:26,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable643 [2021-05-21 20:24:26,108 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]=== [2021-05-21 20:24:26,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:26,108 INFO L82 PathProgramCache]: Analyzing trace with hash 550274941, now seen corresponding path program 640 times [2021-05-21 20:24:26,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:26,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846828201] [2021-05-21 20:24:26,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:26,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:26,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846828201] [2021-05-21 20:24:26,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846828201] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:26,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:26,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:26,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112752062] [2021-05-21 20:24:26,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:26,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:26,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:26,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:26,185 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) [2021-05-21 20:24:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:26,228 INFO L93 Difference]: Finished difference Result 2066 states and 7464 transitions. [2021-05-21 20:24:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:26,229 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 [2021-05-21 20:24:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:26,232 INFO L225 Difference]: With dead ends: 2066 [2021-05-21 20:24:26,232 INFO L226 Difference]: Without dead ends: 1781 [2021-05-21 20:24:26,232 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 [2021-05-21 20:24:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2021-05-21 20:24:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1110. [2021-05-21 20:24:26,253 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) [2021-05-21 20:24:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 4225 transitions. [2021-05-21 20:24:26,255 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 4225 transitions. Word has length 25 [2021-05-21 20:24:26,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:26,255 INFO L482 AbstractCegarLoop]: Abstraction has 1110 states and 4225 transitions. [2021-05-21 20:24:26,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:26,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 4225 transitions. [2021-05-21 20:24:26,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:26,256 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:26,256 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:26,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable644 [2021-05-21 20:24:26,256 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]=== [2021-05-21 20:24:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:26,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1502502781, now seen corresponding path program 641 times [2021-05-21 20:24:26,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:26,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846465528] [2021-05-21 20:24:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:26,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:26,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:26,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846465528] [2021-05-21 20:24:26,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846465528] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:26,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:26,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:26,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035578026] [2021-05-21 20:24:26,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:26,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:26,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:26,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:26,342 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) [2021-05-21 20:24:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:26,399 INFO L93 Difference]: Finished difference Result 2136 states and 7661 transitions. [2021-05-21 20:24:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:26,400 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 [2021-05-21 20:24:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:26,403 INFO L225 Difference]: With dead ends: 2136 [2021-05-21 20:24:26,403 INFO L226 Difference]: Without dead ends: 1953 [2021-05-21 20:24:26,403 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 [2021-05-21 20:24:26,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2021-05-21 20:24:26,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1154. [2021-05-21 20:24:26,425 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) [2021-05-21 20:24:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 4377 transitions. [2021-05-21 20:24:26,427 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 4377 transitions. Word has length 25 [2021-05-21 20:24:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:26,427 INFO L482 AbstractCegarLoop]: Abstraction has 1154 states and 4377 transitions. [2021-05-21 20:24:26,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 4377 transitions. [2021-05-21 20:24:26,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:26,429 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:26,429 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:26,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable645 [2021-05-21 20:24:26,429 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]=== [2021-05-21 20:24:26,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:26,429 INFO L82 PathProgramCache]: Analyzing trace with hash 432983775, now seen corresponding path program 642 times [2021-05-21 20:24:26,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:26,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304202636] [2021-05-21 20:24:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:26,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:26,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304202636] [2021-05-21 20:24:26,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304202636] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:26,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:26,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:26,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088393977] [2021-05-21 20:24:26,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:26,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:26,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:26,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:26,515 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) [2021-05-21 20:24:26,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:26,556 INFO L93 Difference]: Finished difference Result 2047 states and 7379 transitions. [2021-05-21 20:24:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:26,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:26,559 INFO L225 Difference]: With dead ends: 2047 [2021-05-21 20:24:26,559 INFO L226 Difference]: Without dead ends: 1751 [2021-05-21 20:24:26,559 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 [2021-05-21 20:24:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2021-05-21 20:24:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1080. [2021-05-21 20:24:26,580 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) [2021-05-21 20:24:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 4125 transitions. [2021-05-21 20:24:26,582 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 4125 transitions. Word has length 25 [2021-05-21 20:24:26,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:26,582 INFO L482 AbstractCegarLoop]: Abstraction has 1080 states and 4125 transitions. [2021-05-21 20:24:26,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 4125 transitions. [2021-05-21 20:24:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:26,583 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:26,583 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] [2021-05-21 20:24:26,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable646 [2021-05-21 20:24:26,583 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]=== [2021-05-21 20:24:26,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:26,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1475934373, now seen corresponding path program 643 times [2021-05-21 20:24:26,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:26,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962537008] [2021-05-21 20:24:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:26,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:26,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962537008] [2021-05-21 20:24:26,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962537008] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:26,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:26,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:26,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866416298] [2021-05-21 20:24:26,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:26,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:26,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:26,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:26,660 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) [2021-05-21 20:24:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:26,719 INFO L93 Difference]: Finished difference Result 2118 states and 7639 transitions. [2021-05-21 20:24:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:26,719 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 [2021-05-21 20:24:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:26,722 INFO L225 Difference]: With dead ends: 2118 [2021-05-21 20:24:26,723 INFO L226 Difference]: Without dead ends: 1931 [2021-05-21 20:24:26,723 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 [2021-05-21 20:24:26,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2021-05-21 20:24:26,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1130. [2021-05-21 20:24:26,745 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) [2021-05-21 20:24:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 4314 transitions. [2021-05-21 20:24:26,747 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 4314 transitions. Word has length 25 [2021-05-21 20:24:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:26,747 INFO L482 AbstractCegarLoop]: Abstraction has 1130 states and 4314 transitions. [2021-05-21 20:24:26,747 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) [2021-05-21 20:24:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 4314 transitions. [2021-05-21 20:24:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:26,748 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:26,748 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:26,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647 [2021-05-21 20:24:26,748 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]=== [2021-05-21 20:24:26,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:26,749 INFO L82 PathProgramCache]: Analyzing trace with hash -394871747, now seen corresponding path program 644 times [2021-05-21 20:24:26,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:26,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959111197] [2021-05-21 20:24:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:26,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:26,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959111197] [2021-05-21 20:24:26,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959111197] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:26,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:26,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:26,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539400677] [2021-05-21 20:24:26,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:26,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:26,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:26,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:26,824 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) [2021-05-21 20:24:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:26,882 INFO L93 Difference]: Finished difference Result 2114 states and 7599 transitions. [2021-05-21 20:24:26,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:26,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:26,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:26,885 INFO L225 Difference]: With dead ends: 2114 [2021-05-21 20:24:26,885 INFO L226 Difference]: Without dead ends: 1903 [2021-05-21 20:24:26,885 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 [2021-05-21 20:24:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2021-05-21 20:24:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1102. [2021-05-21 20:24:26,907 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) [2021-05-21 20:24:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 4212 transitions. [2021-05-21 20:24:26,909 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 4212 transitions. Word has length 25 [2021-05-21 20:24:26,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:26,909 INFO L482 AbstractCegarLoop]: Abstraction has 1102 states and 4212 transitions. [2021-05-21 20:24:26,909 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) [2021-05-21 20:24:26,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 4212 transitions. [2021-05-21 20:24:26,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:26,910 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:26,910 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] [2021-05-21 20:24:26,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable648 [2021-05-21 20:24:26,910 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]=== [2021-05-21 20:24:26,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:26,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1508451901, now seen corresponding path program 645 times [2021-05-21 20:24:26,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:26,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212578168] [2021-05-21 20:24:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:26,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:26,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212578168] [2021-05-21 20:24:26,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212578168] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:26,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:26,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:26,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104273749] [2021-05-21 20:24:26,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:26,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:26,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:26,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:26,986 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) [2021-05-21 20:24:27,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:27,044 INFO L93 Difference]: Finished difference Result 2115 states and 7611 transitions. [2021-05-21 20:24:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:27,044 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 [2021-05-21 20:24:27,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:27,047 INFO L225 Difference]: With dead ends: 2115 [2021-05-21 20:24:27,047 INFO L226 Difference]: Without dead ends: 1928 [2021-05-21 20:24:27,048 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 [2021-05-21 20:24:27,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2021-05-21 20:24:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1148. [2021-05-21 20:24:27,069 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) [2021-05-21 20:24:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 4369 transitions. [2021-05-21 20:24:27,071 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 4369 transitions. Word has length 25 [2021-05-21 20:24:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:27,071 INFO L482 AbstractCegarLoop]: Abstraction has 1148 states and 4369 transitions. [2021-05-21 20:24:27,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 4369 transitions. [2021-05-21 20:24:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:27,073 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:27,073 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:27,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable649 [2021-05-21 20:24:27,073 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]=== [2021-05-21 20:24:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:27,073 INFO L82 PathProgramCache]: Analyzing trace with hash -278929859, now seen corresponding path program 646 times [2021-05-21 20:24:27,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:27,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544745568] [2021-05-21 20:24:27,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:27,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:27,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544745568] [2021-05-21 20:24:27,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544745568] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:27,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:27,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:27,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597985840] [2021-05-21 20:24:27,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:27,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:27,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:27,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:27,148 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) [2021-05-21 20:24:27,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:27,196 INFO L93 Difference]: Finished difference Result 2022 states and 7315 transitions. [2021-05-21 20:24:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:27,196 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 [2021-05-21 20:24:27,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:27,199 INFO L225 Difference]: With dead ends: 2022 [2021-05-21 20:24:27,199 INFO L226 Difference]: Without dead ends: 1754 [2021-05-21 20:24:27,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2021-05-21 20:24:27,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1102. [2021-05-21 20:24:27,221 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) [2021-05-21 20:24:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 4190 transitions. [2021-05-21 20:24:27,222 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 4190 transitions. Word has length 25 [2021-05-21 20:24:27,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:27,223 INFO L482 AbstractCegarLoop]: Abstraction has 1102 states and 4190 transitions. [2021-05-21 20:24:27,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:27,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 4190 transitions. [2021-05-21 20:24:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:27,224 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:27,224 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] [2021-05-21 20:24:27,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable650 [2021-05-21 20:24:27,224 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]=== [2021-05-21 20:24:27,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:27,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1896456863, now seen corresponding path program 647 times [2021-05-21 20:24:27,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:27,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803270322] [2021-05-21 20:24:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:27,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:27,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803270322] [2021-05-21 20:24:27,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803270322] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:27,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:27,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:27,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033135882] [2021-05-21 20:24:27,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:27,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:27,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:27,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:27,312 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) [2021-05-21 20:24:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:27,379 INFO L93 Difference]: Finished difference Result 2109 states and 7570 transitions. [2021-05-21 20:24:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:27,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:27,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:27,382 INFO L225 Difference]: With dead ends: 2109 [2021-05-21 20:24:27,383 INFO L226 Difference]: Without dead ends: 1926 [2021-05-21 20:24:27,383 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 [2021-05-21 20:24:27,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-05-21 20:24:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1146. [2021-05-21 20:24:27,405 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) [2021-05-21 20:24:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 4342 transitions. [2021-05-21 20:24:27,407 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 4342 transitions. Word has length 25 [2021-05-21 20:24:27,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:27,407 INFO L482 AbstractCegarLoop]: Abstraction has 1146 states and 4342 transitions. [2021-05-21 20:24:27,407 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) [2021-05-21 20:24:27,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 4342 transitions. [2021-05-21 20:24:27,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:27,408 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:27,408 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] [2021-05-21 20:24:27,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable651 [2021-05-21 20:24:27,408 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]=== [2021-05-21 20:24:27,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:27,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1193861251, now seen corresponding path program 648 times [2021-05-21 20:24:27,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:27,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581041065] [2021-05-21 20:24:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:27,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:27,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581041065] [2021-05-21 20:24:27,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581041065] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:27,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:27,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:27,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192296874] [2021-05-21 20:24:27,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:27,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:27,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:27,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:27,495 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) [2021-05-21 20:24:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:27,541 INFO L93 Difference]: Finished difference Result 2020 states and 7288 transitions. [2021-05-21 20:24:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:27,542 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 [2021-05-21 20:24:27,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:27,545 INFO L225 Difference]: With dead ends: 2020 [2021-05-21 20:24:27,545 INFO L226 Difference]: Without dead ends: 1709 [2021-05-21 20:24:27,545 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 [2021-05-21 20:24:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2021-05-21 20:24:27,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1057. [2021-05-21 20:24:27,565 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) [2021-05-21 20:24:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 4063 transitions. [2021-05-21 20:24:27,567 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 4063 transitions. Word has length 25 [2021-05-21 20:24:27,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:27,567 INFO L482 AbstractCegarLoop]: Abstraction has 1057 states and 4063 transitions. [2021-05-21 20:24:27,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:27,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 4063 transitions. [2021-05-21 20:24:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:27,568 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:27,568 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] [2021-05-21 20:24:27,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable652 [2021-05-21 20:24:27,568 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]=== [2021-05-21 20:24:27,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:27,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1725712387, now seen corresponding path program 649 times [2021-05-21 20:24:27,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:27,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898626408] [2021-05-21 20:24:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:27,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:27,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898626408] [2021-05-21 20:24:27,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898626408] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:27,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:27,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:27,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665347472] [2021-05-21 20:24:27,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:27,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:27,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:27,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:27,642 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) [2021-05-21 20:24:27,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:27,698 INFO L93 Difference]: Finished difference Result 2000 states and 7196 transitions. [2021-05-21 20:24:27,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:27,698 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 [2021-05-21 20:24:27,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:27,701 INFO L225 Difference]: With dead ends: 2000 [2021-05-21 20:24:27,701 INFO L226 Difference]: Without dead ends: 1811 [2021-05-21 20:24:27,701 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 [2021-05-21 20:24:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2021-05-21 20:24:27,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1087. [2021-05-21 20:24:27,730 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) [2021-05-21 20:24:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 4156 transitions. [2021-05-21 20:24:27,732 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 4156 transitions. Word has length 25 [2021-05-21 20:24:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:27,732 INFO L482 AbstractCegarLoop]: Abstraction has 1087 states and 4156 transitions. [2021-05-21 20:24:27,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 4156 transitions. [2021-05-21 20:24:27,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:27,734 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:27,734 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:27,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable653 [2021-05-21 20:24:27,734 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]=== [2021-05-21 20:24:27,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:27,734 INFO L82 PathProgramCache]: Analyzing trace with hash 525917915, now seen corresponding path program 650 times [2021-05-21 20:24:27,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:27,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403524603] [2021-05-21 20:24:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:27,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:27,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403524603] [2021-05-21 20:24:27,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403524603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:27,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:27,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:27,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24887093] [2021-05-21 20:24:27,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:27,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:27,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:27,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:27,809 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) [2021-05-21 20:24:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:27,867 INFO L93 Difference]: Finished difference Result 1998 states and 7161 transitions. [2021-05-21 20:24:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:27,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:27,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:27,870 INFO L225 Difference]: With dead ends: 1998 [2021-05-21 20:24:27,870 INFO L226 Difference]: Without dead ends: 1781 [2021-05-21 20:24:27,870 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 [2021-05-21 20:24:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2021-05-21 20:24:27,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1057. [2021-05-21 20:24:27,891 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) [2021-05-21 20:24:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 4051 transitions. [2021-05-21 20:24:27,893 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 4051 transitions. Word has length 25 [2021-05-21 20:24:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:27,893 INFO L482 AbstractCegarLoop]: Abstraction has 1057 states and 4051 transitions. [2021-05-21 20:24:27,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 4051 transitions. [2021-05-21 20:24:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:27,894 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:27,894 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:27,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable654 [2021-05-21 20:24:27,894 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]=== [2021-05-21 20:24:27,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:27,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1773228029, now seen corresponding path program 651 times [2021-05-21 20:24:27,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:27,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614648063] [2021-05-21 20:24:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:27,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:27,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614648063] [2021-05-21 20:24:27,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614648063] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:27,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:27,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:27,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882185797] [2021-05-21 20:24:27,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:27,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:27,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:27,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:27,977 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) [2021-05-21 20:24:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:28,037 INFO L93 Difference]: Finished difference Result 1982 states and 7121 transitions. [2021-05-21 20:24:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:28,038 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 [2021-05-21 20:24:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:28,042 INFO L225 Difference]: With dead ends: 1982 [2021-05-21 20:24:28,042 INFO L226 Difference]: Without dead ends: 1793 [2021-05-21 20:24:28,042 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 [2021-05-21 20:24:28,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-05-21 20:24:28,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1081. [2021-05-21 20:24:28,071 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) [2021-05-21 20:24:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 4127 transitions. [2021-05-21 20:24:28,074 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 4127 transitions. Word has length 25 [2021-05-21 20:24:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:28,074 INFO L482 AbstractCegarLoop]: Abstraction has 1081 states and 4127 transitions. [2021-05-21 20:24:28,074 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) [2021-05-21 20:24:28,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 4127 transitions. [2021-05-21 20:24:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:28,076 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:28,076 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] [2021-05-21 20:24:28,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable655 [2021-05-21 20:24:28,076 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]=== [2021-05-21 20:24:28,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:28,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1965950979, now seen corresponding path program 652 times [2021-05-21 20:24:28,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:28,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252008928] [2021-05-21 20:24:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:28,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:28,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252008928] [2021-05-21 20:24:28,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252008928] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:28,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:28,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:28,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271666892] [2021-05-21 20:24:28,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:28,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:28,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:28,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:28,176 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) [2021-05-21 20:24:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:28,247 INFO L93 Difference]: Finished difference Result 1968 states and 7052 transitions. [2021-05-21 20:24:28,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:28,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:28,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:28,251 INFO L225 Difference]: With dead ends: 1968 [2021-05-21 20:24:28,251 INFO L226 Difference]: Without dead ends: 1769 [2021-05-21 20:24:28,251 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 [2021-05-21 20:24:28,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-05-21 20:24:28,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1057. [2021-05-21 20:24:28,280 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) [2021-05-21 20:24:28,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 4039 transitions. [2021-05-21 20:24:28,283 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 4039 transitions. Word has length 25 [2021-05-21 20:24:28,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:28,283 INFO L482 AbstractCegarLoop]: Abstraction has 1057 states and 4039 transitions. [2021-05-21 20:24:28,283 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) [2021-05-21 20:24:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 4039 transitions. [2021-05-21 20:24:28,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:28,285 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:28,285 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:28,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable656 [2021-05-21 20:24:28,285 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]=== [2021-05-21 20:24:28,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:28,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1539391653, now seen corresponding path program 653 times [2021-05-21 20:24:28,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:28,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089240662] [2021-05-21 20:24:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:28,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:28,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089240662] [2021-05-21 20:24:28,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089240662] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:28,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:28,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:28,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199055804] [2021-05-21 20:24:28,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:28,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:28,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:28,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:28,372 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) [2021-05-21 20:24:28,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:28,434 INFO L93 Difference]: Finished difference Result 1978 states and 7099 transitions. [2021-05-21 20:24:28,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:28,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:28,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:28,437 INFO L225 Difference]: With dead ends: 1978 [2021-05-21 20:24:28,437 INFO L226 Difference]: Without dead ends: 1791 [2021-05-21 20:24:28,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-05-21 20:24:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1081. [2021-05-21 20:24:28,458 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) [2021-05-21 20:24:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 4115 transitions. [2021-05-21 20:24:28,459 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 4115 transitions. Word has length 25 [2021-05-21 20:24:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:28,460 INFO L482 AbstractCegarLoop]: Abstraction has 1081 states and 4115 transitions. [2021-05-21 20:24:28,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 4115 transitions. [2021-05-21 20:24:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:28,461 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:28,461 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] [2021-05-21 20:24:28,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable657 [2021-05-21 20:24:28,461 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]=== [2021-05-21 20:24:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1746199619, now seen corresponding path program 654 times [2021-05-21 20:24:28,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:28,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833458534] [2021-05-21 20:24:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:28,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:28,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833458534] [2021-05-21 20:24:28,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833458534] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:28,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:28,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:28,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017606246] [2021-05-21 20:24:28,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:28,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:28,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:28,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:28,535 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) [2021-05-21 20:24:28,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:28,592 INFO L93 Difference]: Finished difference Result 1966 states and 7035 transitions. [2021-05-21 20:24:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:28,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:28,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:28,595 INFO L225 Difference]: With dead ends: 1966 [2021-05-21 20:24:28,595 INFO L226 Difference]: Without dead ends: 1755 [2021-05-21 20:24:28,595 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 [2021-05-21 20:24:28,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-05-21 20:24:28,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1045. [2021-05-21 20:24:28,616 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) [2021-05-21 20:24:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 4001 transitions. [2021-05-21 20:24:28,618 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 4001 transitions. Word has length 25 [2021-05-21 20:24:28,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:28,618 INFO L482 AbstractCegarLoop]: Abstraction has 1045 states and 4001 transitions. [2021-05-21 20:24:28,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:28,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 4001 transitions. [2021-05-21 20:24:28,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:28,619 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:28,619 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:28,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable658 [2021-05-21 20:24:28,620 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]=== [2021-05-21 20:24:28,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:28,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1834794719, now seen corresponding path program 655 times [2021-05-21 20:24:28,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:28,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356115765] [2021-05-21 20:24:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:28,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:28,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356115765] [2021-05-21 20:24:28,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356115765] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:28,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:28,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:28,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755815570] [2021-05-21 20:24:28,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:28,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:28,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:28,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:28,695 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) [2021-05-21 20:24:28,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:28,751 INFO L93 Difference]: Finished difference Result 2066 states and 7395 transitions. [2021-05-21 20:24:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:28,751 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 [2021-05-21 20:24:28,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:28,754 INFO L225 Difference]: With dead ends: 2066 [2021-05-21 20:24:28,755 INFO L226 Difference]: Without dead ends: 1877 [2021-05-21 20:24:28,755 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 [2021-05-21 20:24:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2021-05-21 20:24:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1045. [2021-05-21 20:24:28,775 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) [2021-05-21 20:24:28,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 3971 transitions. [2021-05-21 20:24:28,777 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 3971 transitions. Word has length 25 [2021-05-21 20:24:28,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:28,777 INFO L482 AbstractCegarLoop]: Abstraction has 1045 states and 3971 transitions. [2021-05-21 20:24:28,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 3971 transitions. [2021-05-21 20:24:28,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:28,779 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:28,779 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:28,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable659 [2021-05-21 20:24:28,779 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]=== [2021-05-21 20:24:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:28,779 INFO L82 PathProgramCache]: Analyzing trace with hash -208542275, now seen corresponding path program 656 times [2021-05-21 20:24:28,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:28,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007383856] [2021-05-21 20:24:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:28,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:28,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007383856] [2021-05-21 20:24:28,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007383856] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:28,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:28,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:28,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119576503] [2021-05-21 20:24:28,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:28,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:28,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:28,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:28,855 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) [2021-05-21 20:24:28,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:28,914 INFO L93 Difference]: Finished difference Result 2064 states and 7360 transitions. [2021-05-21 20:24:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:28,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:28,918 INFO L225 Difference]: With dead ends: 2064 [2021-05-21 20:24:28,918 INFO L226 Difference]: Without dead ends: 1847 [2021-05-21 20:24:28,918 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 [2021-05-21 20:24:28,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2021-05-21 20:24:28,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1015. [2021-05-21 20:24:28,938 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) [2021-05-21 20:24:28,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 3863 transitions. [2021-05-21 20:24:28,940 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 3863 transitions. Word has length 25 [2021-05-21 20:24:28,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:28,940 INFO L482 AbstractCegarLoop]: Abstraction has 1015 states and 3863 transitions. [2021-05-21 20:24:28,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 3863 transitions. [2021-05-21 20:24:28,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:28,941 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:28,941 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:28,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable660 [2021-05-21 20:24:28,941 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]=== [2021-05-21 20:24:28,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:28,941 INFO L82 PathProgramCache]: Analyzing trace with hash 292204541, now seen corresponding path program 657 times [2021-05-21 20:24:28,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:28,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314087881] [2021-05-21 20:24:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:29,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:29,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314087881] [2021-05-21 20:24:29,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314087881] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:29,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:29,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:29,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644081537] [2021-05-21 20:24:29,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:29,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:29,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:29,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:29,031 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) [2021-05-21 20:24:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:29,086 INFO L93 Difference]: Finished difference Result 2072 states and 7393 transitions. [2021-05-21 20:24:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:29,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:29,090 INFO L225 Difference]: With dead ends: 2072 [2021-05-21 20:24:29,090 INFO L226 Difference]: Without dead ends: 1883 [2021-05-21 20:24:29,090 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 [2021-05-21 20:24:29,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2021-05-21 20:24:29,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1078. [2021-05-21 20:24:29,110 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) [2021-05-21 20:24:29,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 4070 transitions. [2021-05-21 20:24:29,112 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 4070 transitions. Word has length 25 [2021-05-21 20:24:29,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:29,112 INFO L482 AbstractCegarLoop]: Abstraction has 1078 states and 4070 transitions. [2021-05-21 20:24:29,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 4070 transitions. [2021-05-21 20:24:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:29,113 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:29,113 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:29,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable661 [2021-05-21 20:24:29,113 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]=== [2021-05-21 20:24:29,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:29,114 INFO L82 PathProgramCache]: Analyzing trace with hash -263583747, now seen corresponding path program 658 times [2021-05-21 20:24:29,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:29,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955236215] [2021-05-21 20:24:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:29,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:29,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955236215] [2021-05-21 20:24:29,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955236215] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:29,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:29,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:29,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110641219] [2021-05-21 20:24:29,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:29,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:29,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:29,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:29,190 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) [2021-05-21 20:24:29,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:29,235 INFO L93 Difference]: Finished difference Result 1977 states and 7091 transitions. [2021-05-21 20:24:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:29,236 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 [2021-05-21 20:24:29,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:29,239 INFO L225 Difference]: With dead ends: 1977 [2021-05-21 20:24:29,239 INFO L226 Difference]: Without dead ends: 1692 [2021-05-21 20:24:29,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:29,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-05-21 20:24:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1015. [2021-05-21 20:24:29,258 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) [2021-05-21 20:24:29,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 3832 transitions. [2021-05-21 20:24:29,260 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 3832 transitions. Word has length 25 [2021-05-21 20:24:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:29,260 INFO L482 AbstractCegarLoop]: Abstraction has 1015 states and 3832 transitions. [2021-05-21 20:24:29,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 3832 transitions. [2021-05-21 20:24:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:29,261 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:29,261 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:29,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable662 [2021-05-21 20:24:29,261 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]=== [2021-05-21 20:24:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:29,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1274552155, now seen corresponding path program 659 times [2021-05-21 20:24:29,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:29,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315238619] [2021-05-21 20:24:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:29,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:29,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315238619] [2021-05-21 20:24:29,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315238619] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:29,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:29,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:29,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750215463] [2021-05-21 20:24:29,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:29,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:29,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:29,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:29,338 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) [2021-05-21 20:24:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:29,406 INFO L93 Difference]: Finished difference Result 2053 states and 7306 transitions. [2021-05-21 20:24:29,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:29,406 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 [2021-05-21 20:24:29,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:29,409 INFO L225 Difference]: With dead ends: 2053 [2021-05-21 20:24:29,409 INFO L226 Difference]: Without dead ends: 1866 [2021-05-21 20:24:29,409 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 [2021-05-21 20:24:29,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-05-21 20:24:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1061. [2021-05-21 20:24:29,430 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) [2021-05-21 20:24:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 3989 transitions. [2021-05-21 20:24:29,431 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 3989 transitions. Word has length 25 [2021-05-21 20:24:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:29,431 INFO L482 AbstractCegarLoop]: Abstraction has 1061 states and 3989 transitions. [2021-05-21 20:24:29,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 3989 transitions. [2021-05-21 20:24:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:29,433 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:29,433 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] [2021-05-21 20:24:29,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable663 [2021-05-21 20:24:29,433 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]=== [2021-05-21 20:24:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:29,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1082837443, now seen corresponding path program 660 times [2021-05-21 20:24:29,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:29,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268574297] [2021-05-21 20:24:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:29,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:29,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268574297] [2021-05-21 20:24:29,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268574297] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:29,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:29,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:29,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372326386] [2021-05-21 20:24:29,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:29,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:29,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:29,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:29,509 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) [2021-05-21 20:24:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:29,555 INFO L93 Difference]: Finished difference Result 1960 states and 7010 transitions. [2021-05-21 20:24:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:29,555 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 [2021-05-21 20:24:29,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:29,558 INFO L225 Difference]: With dead ends: 1960 [2021-05-21 20:24:29,558 INFO L226 Difference]: Without dead ends: 1653 [2021-05-21 20:24:29,558 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-05-21 20:24:29,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 976. [2021-05-21 20:24:29,576 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) [2021-05-21 20:24:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 3707 transitions. [2021-05-21 20:24:29,578 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 3707 transitions. Word has length 25 [2021-05-21 20:24:29,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:29,578 INFO L482 AbstractCegarLoop]: Abstraction has 976 states and 3707 transitions. [2021-05-21 20:24:29,578 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) [2021-05-21 20:24:29,578 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 3707 transitions. [2021-05-21 20:24:29,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:29,579 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:29,579 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] [2021-05-21 20:24:29,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable664 [2021-05-21 20:24:29,579 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]=== [2021-05-21 20:24:29,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:29,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1407215619, now seen corresponding path program 661 times [2021-05-21 20:24:29,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:29,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201527679] [2021-05-21 20:24:29,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:29,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:29,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201527679] [2021-05-21 20:24:29,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201527679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:29,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:29,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:29,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076150278] [2021-05-21 20:24:29,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:29,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:29,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:29,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:29,672 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) [2021-05-21 20:24:29,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:29,729 INFO L93 Difference]: Finished difference Result 1957 states and 6997 transitions. [2021-05-21 20:24:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:29,730 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 [2021-05-21 20:24:29,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:29,733 INFO L225 Difference]: With dead ends: 1957 [2021-05-21 20:24:29,733 INFO L226 Difference]: Without dead ends: 1768 [2021-05-21 20:24:29,733 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 [2021-05-21 20:24:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-05-21 20:24:29,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1028. [2021-05-21 20:24:29,752 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) [2021-05-21 20:24:29,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 3903 transitions. [2021-05-21 20:24:29,754 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 3903 transitions. Word has length 25 [2021-05-21 20:24:29,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:29,754 INFO L482 AbstractCegarLoop]: Abstraction has 1028 states and 3903 transitions. [2021-05-21 20:24:29,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:29,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 3903 transitions. [2021-05-21 20:24:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:29,755 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:29,755 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] [2021-05-21 20:24:29,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable665 [2021-05-21 20:24:29,755 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]=== [2021-05-21 20:24:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:29,756 INFO L82 PathProgramCache]: Analyzing trace with hash -851427331, now seen corresponding path program 662 times [2021-05-21 20:24:29,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:29,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130640586] [2021-05-21 20:24:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:29,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:29,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130640586] [2021-05-21 20:24:29,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130640586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:29,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:29,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:29,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017161165] [2021-05-21 20:24:29,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:29,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:29,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:29,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:29,873 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) [2021-05-21 20:24:29,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:29,937 INFO L93 Difference]: Finished difference Result 1943 states and 6928 transitions. [2021-05-21 20:24:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:29,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:29,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:29,941 INFO L225 Difference]: With dead ends: 1943 [2021-05-21 20:24:29,942 INFO L226 Difference]: Without dead ends: 1744 [2021-05-21 20:24:29,942 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:29,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2021-05-21 20:24:29,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1004. [2021-05-21 20:24:29,969 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) [2021-05-21 20:24:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3815 transitions. [2021-05-21 20:24:29,971 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3815 transitions. Word has length 25 [2021-05-21 20:24:29,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:29,971 INFO L482 AbstractCegarLoop]: Abstraction has 1004 states and 3815 transitions. [2021-05-21 20:24:29,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:29,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3815 transitions. [2021-05-21 20:24:29,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:29,973 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:29,973 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] [2021-05-21 20:24:29,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable666 [2021-05-21 20:24:29,973 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]=== [2021-05-21 20:24:29,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:29,974 INFO L82 PathProgramCache]: Analyzing trace with hash -2024738977, now seen corresponding path program 663 times [2021-05-21 20:24:29,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:29,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999186383] [2021-05-21 20:24:29,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:30,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:30,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999186383] [2021-05-21 20:24:30,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999186383] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:30,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:30,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:30,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891531360] [2021-05-21 20:24:30,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:30,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:30,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:30,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:30,071 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) [2021-05-21 20:24:30,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:30,131 INFO L93 Difference]: Finished difference Result 1918 states and 6823 transitions. [2021-05-21 20:24:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:30,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:30,134 INFO L225 Difference]: With dead ends: 1918 [2021-05-21 20:24:30,134 INFO L226 Difference]: Without dead ends: 1729 [2021-05-21 20:24:30,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:30,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-05-21 20:24:30,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1067. [2021-05-21 20:24:30,153 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) [2021-05-21 20:24:30,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 4022 transitions. [2021-05-21 20:24:30,155 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 4022 transitions. Word has length 25 [2021-05-21 20:24:30,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:30,155 INFO L482 AbstractCegarLoop]: Abstraction has 1067 states and 4022 transitions. [2021-05-21 20:24:30,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 4022 transitions. [2021-05-21 20:24:30,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:30,156 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:30,156 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] [2021-05-21 20:24:30,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable667 [2021-05-21 20:24:30,156 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]=== [2021-05-21 20:24:30,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:30,157 INFO L82 PathProgramCache]: Analyzing trace with hash -741236739, now seen corresponding path program 664 times [2021-05-21 20:24:30,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:30,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508457098] [2021-05-21 20:24:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:30,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:30,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508457098] [2021-05-21 20:24:30,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508457098] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:30,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:30,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:30,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359256071] [2021-05-21 20:24:30,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:30,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:30,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:30,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:30,243 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) [2021-05-21 20:24:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:30,282 INFO L93 Difference]: Finished difference Result 1823 states and 6521 transitions. [2021-05-21 20:24:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:30,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:30,285 INFO L225 Difference]: With dead ends: 1823 [2021-05-21 20:24:30,285 INFO L226 Difference]: Without dead ends: 1538 [2021-05-21 20:24:30,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:30,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-05-21 20:24:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1004. [2021-05-21 20:24:30,303 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) [2021-05-21 20:24:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3787 transitions. [2021-05-21 20:24:30,305 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3787 transitions. Word has length 25 [2021-05-21 20:24:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:30,305 INFO L482 AbstractCegarLoop]: Abstraction has 1004 states and 3787 transitions. [2021-05-21 20:24:30,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3787 transitions. [2021-05-21 20:24:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:30,306 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:30,306 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] [2021-05-21 20:24:30,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable668 [2021-05-21 20:24:30,307 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]=== [2021-05-21 20:24:30,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:30,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1906939901, now seen corresponding path program 665 times [2021-05-21 20:24:30,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:30,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804556240] [2021-05-21 20:24:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:30,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:30,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804556240] [2021-05-21 20:24:30,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804556240] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:30,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:30,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:30,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649684883] [2021-05-21 20:24:30,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:30,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:30,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:30,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:30,412 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) [2021-05-21 20:24:30,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:30,472 INFO L93 Difference]: Finished difference Result 1753 states and 6291 transitions. [2021-05-21 20:24:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:30,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:30,476 INFO L225 Difference]: With dead ends: 1753 [2021-05-21 20:24:30,476 INFO L226 Difference]: Without dead ends: 1578 [2021-05-21 20:24:30,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2021-05-21 20:24:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1044. [2021-05-21 20:24:30,503 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) [2021-05-21 20:24:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 3927 transitions. [2021-05-21 20:24:30,505 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 3927 transitions. Word has length 25 [2021-05-21 20:24:30,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:30,505 INFO L482 AbstractCegarLoop]: Abstraction has 1044 states and 3927 transitions. [2021-05-21 20:24:30,506 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) [2021-05-21 20:24:30,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 3927 transitions. [2021-05-21 20:24:30,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:30,507 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:30,507 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:30,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable669 [2021-05-21 20:24:30,507 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]=== [2021-05-21 20:24:30,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:30,508 INFO L82 PathProgramCache]: Analyzing trace with hash 2125291487, now seen corresponding path program 666 times [2021-05-21 20:24:30,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:30,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132840451] [2021-05-21 20:24:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:30,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:30,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132840451] [2021-05-21 20:24:30,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132840451] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:30,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:30,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:30,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739884143] [2021-05-21 20:24:30,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:30,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:30,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:30,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:30,617 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) [2021-05-21 20:24:30,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:30,662 INFO L93 Difference]: Finished difference Result 1577 states and 5706 transitions. [2021-05-21 20:24:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:30,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:30,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:30,665 INFO L225 Difference]: With dead ends: 1577 [2021-05-21 20:24:30,665 INFO L226 Difference]: Without dead ends: 1287 [2021-05-21 20:24:30,666 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 [2021-05-21 20:24:30,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-05-21 20:24:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 976. [2021-05-21 20:24:30,689 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) [2021-05-21 20:24:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 3693 transitions. [2021-05-21 20:24:30,691 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 3693 transitions. Word has length 25 [2021-05-21 20:24:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:30,691 INFO L482 AbstractCegarLoop]: Abstraction has 976 states and 3693 transitions. [2021-05-21 20:24:30,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 3693 transitions. [2021-05-21 20:24:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:30,693 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:30,693 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:30,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable670 [2021-05-21 20:24:30,693 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]=== [2021-05-21 20:24:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:30,693 INFO L82 PathProgramCache]: Analyzing trace with hash -434819109, now seen corresponding path program 667 times [2021-05-21 20:24:30,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:30,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863570635] [2021-05-21 20:24:30,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:30,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:30,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863570635] [2021-05-21 20:24:30,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863570635] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:30,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:30,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:30,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985766335] [2021-05-21 20:24:30,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:30,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:30,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:30,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:30,773 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) [2021-05-21 20:24:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:30,834 INFO L93 Difference]: Finished difference Result 1928 states and 6894 transitions. [2021-05-21 20:24:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:30,834 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 [2021-05-21 20:24:30,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:30,837 INFO L225 Difference]: With dead ends: 1928 [2021-05-21 20:24:30,837 INFO L226 Difference]: Without dead ends: 1741 [2021-05-21 20:24:30,837 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 [2021-05-21 20:24:30,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2021-05-21 20:24:30,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1020. [2021-05-21 20:24:30,857 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) [2021-05-21 20:24:30,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 3861 transitions. [2021-05-21 20:24:30,859 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 3861 transitions. Word has length 25 [2021-05-21 20:24:30,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:30,859 INFO L482 AbstractCegarLoop]: Abstraction has 1020 states and 3861 transitions. [2021-05-21 20:24:30,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 3861 transitions. [2021-05-21 20:24:30,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:30,860 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:30,860 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] [2021-05-21 20:24:30,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable671 [2021-05-21 20:24:30,861 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]=== [2021-05-21 20:24:30,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:30,861 INFO L82 PathProgramCache]: Analyzing trace with hash -641627075, now seen corresponding path program 668 times [2021-05-21 20:24:30,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:30,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209090266] [2021-05-21 20:24:30,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:30,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:30,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209090266] [2021-05-21 20:24:30,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209090266] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:30,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:30,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:30,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956335962] [2021-05-21 20:24:30,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:30,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:30,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:30,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:30,935 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) [2021-05-21 20:24:30,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:30,990 INFO L93 Difference]: Finished difference Result 1916 states and 6830 transitions. [2021-05-21 20:24:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:30,990 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 [2021-05-21 20:24:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:30,993 INFO L225 Difference]: With dead ends: 1916 [2021-05-21 20:24:30,993 INFO L226 Difference]: Without dead ends: 1717 [2021-05-21 20:24:30,993 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 [2021-05-21 20:24:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2021-05-21 20:24:31,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 996. [2021-05-21 20:24:31,012 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) [2021-05-21 20:24:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 3773 transitions. [2021-05-21 20:24:31,014 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 3773 transitions. Word has length 25 [2021-05-21 20:24:31,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:31,014 INFO L482 AbstractCegarLoop]: Abstraction has 996 states and 3773 transitions. [2021-05-21 20:24:31,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 3773 transitions. [2021-05-21 20:24:31,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:31,015 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:31,015 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] [2021-05-21 20:24:31,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable672 [2021-05-21 20:24:31,015 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]=== [2021-05-21 20:24:31,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:31,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1052342467, now seen corresponding path program 669 times [2021-05-21 20:24:31,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:31,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631019900] [2021-05-21 20:24:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:31,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:31,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631019900] [2021-05-21 20:24:31,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631019900] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:31,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:31,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:31,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688367407] [2021-05-21 20:24:31,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:31,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:31,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:31,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:31,089 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) [2021-05-21 20:24:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:31,141 INFO L93 Difference]: Finished difference Result 1891 states and 6725 transitions. [2021-05-21 20:24:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:31,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:31,145 INFO L225 Difference]: With dead ends: 1891 [2021-05-21 20:24:31,145 INFO L226 Difference]: Without dead ends: 1704 [2021-05-21 20:24:31,145 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 [2021-05-21 20:24:31,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-05-21 20:24:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1042. [2021-05-21 20:24:31,164 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) [2021-05-21 20:24:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 3930 transitions. [2021-05-21 20:24:31,165 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 3930 transitions. Word has length 25 [2021-05-21 20:24:31,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:31,166 INFO L482 AbstractCegarLoop]: Abstraction has 1042 states and 3930 transitions. [2021-05-21 20:24:31,166 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) [2021-05-21 20:24:31,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 3930 transitions. [2021-05-21 20:24:31,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:31,167 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:31,167 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] [2021-05-21 20:24:31,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable673 [2021-05-21 20:24:31,167 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]=== [2021-05-21 20:24:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:31,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1570441539, now seen corresponding path program 670 times [2021-05-21 20:24:31,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:31,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303659132] [2021-05-21 20:24:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:31,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:31,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303659132] [2021-05-21 20:24:31,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303659132] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:31,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:31,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:31,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717485719] [2021-05-21 20:24:31,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:31,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:31,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:31,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:31,241 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) [2021-05-21 20:24:31,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:31,284 INFO L93 Difference]: Finished difference Result 1798 states and 6429 transitions. [2021-05-21 20:24:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:31,284 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 [2021-05-21 20:24:31,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:31,287 INFO L225 Difference]: With dead ends: 1798 [2021-05-21 20:24:31,287 INFO L226 Difference]: Without dead ends: 1530 [2021-05-21 20:24:31,287 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-05-21 20:24:31,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 996. [2021-05-21 20:24:31,305 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) [2021-05-21 20:24:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 3753 transitions. [2021-05-21 20:24:31,306 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 3753 transitions. Word has length 25 [2021-05-21 20:24:31,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:31,306 INFO L482 AbstractCegarLoop]: Abstraction has 996 states and 3753 transitions. [2021-05-21 20:24:31,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:31,307 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 3753 transitions. [2021-05-21 20:24:31,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:31,308 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:31,308 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] [2021-05-21 20:24:31,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable674 [2021-05-21 20:24:31,308 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]=== [2021-05-21 20:24:31,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:31,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1649701535, now seen corresponding path program 671 times [2021-05-21 20:24:31,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:31,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551856181] [2021-05-21 20:24:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:31,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:31,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551856181] [2021-05-21 20:24:31,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551856181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:31,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:31,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:31,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140991994] [2021-05-21 20:24:31,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:31,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:31,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:31,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:31,422 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) [2021-05-21 20:24:31,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:31,474 INFO L93 Difference]: Finished difference Result 1745 states and 6257 transitions. [2021-05-21 20:24:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:31,474 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 [2021-05-21 20:24:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:31,477 INFO L225 Difference]: With dead ends: 1745 [2021-05-21 20:24:31,477 INFO L226 Difference]: Without dead ends: 1570 [2021-05-21 20:24:31,477 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 [2021-05-21 20:24:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-05-21 20:24:31,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1036. [2021-05-21 20:24:31,495 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) [2021-05-21 20:24:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 3893 transitions. [2021-05-21 20:24:31,497 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 3893 transitions. Word has length 25 [2021-05-21 20:24:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:31,497 INFO L482 AbstractCegarLoop]: Abstraction has 1036 states and 3893 transitions. [2021-05-21 20:24:31,497 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) [2021-05-21 20:24:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 3893 transitions. [2021-05-21 20:24:31,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:31,498 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:31,498 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:31,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable675 [2021-05-21 20:24:31,499 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]=== [2021-05-21 20:24:31,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:31,499 INFO L82 PathProgramCache]: Analyzing trace with hash -171333891, now seen corresponding path program 672 times [2021-05-21 20:24:31,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:31,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207574721] [2021-05-21 20:24:31,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:31,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:31,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207574721] [2021-05-21 20:24:31,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207574721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:31,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:31,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:31,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763688664] [2021-05-21 20:24:31,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:31,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:31,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:31,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:31,585 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) [2021-05-21 20:24:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:31,621 INFO L93 Difference]: Finished difference Result 1569 states and 5672 transitions. [2021-05-21 20:24:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:31,622 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 [2021-05-21 20:24:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:31,624 INFO L225 Difference]: With dead ends: 1569 [2021-05-21 20:24:31,624 INFO L226 Difference]: Without dead ends: 1269 [2021-05-21 20:24:31,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-05-21 20:24:31,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 958. [2021-05-21 20:24:31,640 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) [2021-05-21 20:24:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3643 transitions. [2021-05-21 20:24:31,642 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3643 transitions. Word has length 25 [2021-05-21 20:24:31,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:31,642 INFO L482 AbstractCegarLoop]: Abstraction has 958 states and 3643 transitions. [2021-05-21 20:24:31,642 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) [2021-05-21 20:24:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3643 transitions. [2021-05-21 20:24:31,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:31,643 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:31,643 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:31,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable676 [2021-05-21 20:24:31,643 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]=== [2021-05-21 20:24:31,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:31,643 INFO L82 PathProgramCache]: Analyzing trace with hash 739430491, now seen corresponding path program 673 times [2021-05-21 20:24:31,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:31,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035708169] [2021-05-21 20:24:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:31,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:31,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035708169] [2021-05-21 20:24:31,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035708169] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:31,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:31,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:31,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451302705] [2021-05-21 20:24:31,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:31,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:31,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:31,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:31,718 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) [2021-05-21 20:24:31,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:31,769 INFO L93 Difference]: Finished difference Result 1805 states and 6424 transitions. [2021-05-21 20:24:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:31,772 INFO L225 Difference]: With dead ends: 1805 [2021-05-21 20:24:31,772 INFO L226 Difference]: Without dead ends: 1616 [2021-05-21 20:24:31,772 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 [2021-05-21 20:24:31,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2021-05-21 20:24:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 986. [2021-05-21 20:24:31,790 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) [2021-05-21 20:24:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 3731 transitions. [2021-05-21 20:24:31,792 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 3731 transitions. Word has length 25 [2021-05-21 20:24:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:31,792 INFO L482 AbstractCegarLoop]: Abstraction has 986 states and 3731 transitions. [2021-05-21 20:24:31,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 3731 transitions. [2021-05-21 20:24:31,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:31,793 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:31,793 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] [2021-05-21 20:24:31,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable677 [2021-05-21 20:24:31,793 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]=== [2021-05-21 20:24:31,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:31,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1931896923, now seen corresponding path program 674 times [2021-05-21 20:24:31,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:31,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754389222] [2021-05-21 20:24:31,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:31,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:31,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:31,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754389222] [2021-05-21 20:24:31,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754389222] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:31,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:31,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:31,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257839731] [2021-05-21 20:24:31,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:31,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:31,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:31,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:31,869 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) [2021-05-21 20:24:31,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:31,920 INFO L93 Difference]: Finished difference Result 1799 states and 6379 transitions. [2021-05-21 20:24:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:31,920 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 [2021-05-21 20:24:31,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:31,923 INFO L225 Difference]: With dead ends: 1799 [2021-05-21 20:24:31,923 INFO L226 Difference]: Without dead ends: 1588 [2021-05-21 20:24:31,923 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 [2021-05-21 20:24:31,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-05-21 20:24:31,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 958. [2021-05-21 20:24:31,941 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) [2021-05-21 20:24:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3631 transitions. [2021-05-21 20:24:31,943 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3631 transitions. Word has length 25 [2021-05-21 20:24:31,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:31,943 INFO L482 AbstractCegarLoop]: Abstraction has 958 states and 3631 transitions. [2021-05-21 20:24:31,943 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) [2021-05-21 20:24:31,943 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3631 transitions. [2021-05-21 20:24:31,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:31,944 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:31,944 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:31,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable678 [2021-05-21 20:24:31,944 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]=== [2021-05-21 20:24:31,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:31,944 INFO L82 PathProgramCache]: Analyzing trace with hash 258528445, now seen corresponding path program 675 times [2021-05-21 20:24:31,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:31,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564231619] [2021-05-21 20:24:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:32,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:32,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564231619] [2021-05-21 20:24:32,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564231619] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:32,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:32,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:32,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668181494] [2021-05-21 20:24:32,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:32,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:32,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:32,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:32,038 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) [2021-05-21 20:24:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:32,087 INFO L93 Difference]: Finished difference Result 1793 states and 6368 transitions. [2021-05-21 20:24:32,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:32,088 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 [2021-05-21 20:24:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:32,090 INFO L225 Difference]: With dead ends: 1793 [2021-05-21 20:24:32,090 INFO L226 Difference]: Without dead ends: 1604 [2021-05-21 20:24:32,090 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 [2021-05-21 20:24:32,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-05-21 20:24:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 982. [2021-05-21 20:24:32,109 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) [2021-05-21 20:24:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 3707 transitions. [2021-05-21 20:24:32,110 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 3707 transitions. Word has length 25 [2021-05-21 20:24:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:32,110 INFO L482 AbstractCegarLoop]: Abstraction has 982 states and 3707 transitions. [2021-05-21 20:24:32,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:32,110 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 3707 transitions. [2021-05-21 20:24:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:32,112 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:32,112 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] [2021-05-21 20:24:32,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable679 [2021-05-21 20:24:32,112 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]=== [2021-05-21 20:24:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:32,112 INFO L82 PathProgramCache]: Analyzing trace with hash -667121573, now seen corresponding path program 676 times [2021-05-21 20:24:32,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:32,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501632879] [2021-05-21 20:24:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:32,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:32,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501632879] [2021-05-21 20:24:32,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501632879] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:32,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:32,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:32,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476527642] [2021-05-21 20:24:32,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:32,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:32,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:32,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:32,196 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) [2021-05-21 20:24:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:32,248 INFO L93 Difference]: Finished difference Result 1779 states and 6299 transitions. [2021-05-21 20:24:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:32,248 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 [2021-05-21 20:24:32,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:32,251 INFO L225 Difference]: With dead ends: 1779 [2021-05-21 20:24:32,251 INFO L226 Difference]: Without dead ends: 1580 [2021-05-21 20:24:32,251 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 [2021-05-21 20:24:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-05-21 20:24:32,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 958. [2021-05-21 20:24:32,269 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) [2021-05-21 20:24:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3619 transitions. [2021-05-21 20:24:32,270 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3619 transitions. Word has length 25 [2021-05-21 20:24:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:32,270 INFO L482 AbstractCegarLoop]: Abstraction has 958 states and 3619 transitions. [2021-05-21 20:24:32,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3619 transitions. [2021-05-21 20:24:32,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:32,272 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:32,272 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] [2021-05-21 20:24:32,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable680 [2021-05-21 20:24:32,272 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]=== [2021-05-21 20:24:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:32,272 INFO L82 PathProgramCache]: Analyzing trace with hash -826470309, now seen corresponding path program 677 times [2021-05-21 20:24:32,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:32,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707751251] [2021-05-21 20:24:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:32,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:32,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707751251] [2021-05-21 20:24:32,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707751251] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:32,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:32,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:32,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475081567] [2021-05-21 20:24:32,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:32,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:32,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:32,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:32,346 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) [2021-05-21 20:24:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:32,395 INFO L93 Difference]: Finished difference Result 1781 states and 6322 transitions. [2021-05-21 20:24:32,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:32,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:32,398 INFO L225 Difference]: With dead ends: 1781 [2021-05-21 20:24:32,398 INFO L226 Difference]: Without dead ends: 1598 [2021-05-21 20:24:32,398 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 [2021-05-21 20:24:32,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-05-21 20:24:32,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 982. [2021-05-21 20:24:32,416 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) [2021-05-21 20:24:32,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 3695 transitions. [2021-05-21 20:24:32,418 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 3695 transitions. Word has length 25 [2021-05-21 20:24:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:32,418 INFO L482 AbstractCegarLoop]: Abstraction has 982 states and 3695 transitions. [2021-05-21 20:24:32,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:32,418 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 3695 transitions. [2021-05-21 20:24:32,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:32,419 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:32,419 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:32,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable681 [2021-05-21 20:24:32,420 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]=== [2021-05-21 20:24:32,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:32,420 INFO L82 PathProgramCache]: Analyzing trace with hash 254592317, now seen corresponding path program 678 times [2021-05-21 20:24:32,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:32,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845089833] [2021-05-21 20:24:32,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:32,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:32,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845089833] [2021-05-21 20:24:32,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845089833] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:32,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:32,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:32,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970819250] [2021-05-21 20:24:32,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:32,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:32,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:32,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:32,495 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) [2021-05-21 20:24:32,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:32,546 INFO L93 Difference]: Finished difference Result 1773 states and 6270 transitions. [2021-05-21 20:24:32,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:32,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:32,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:32,549 INFO L225 Difference]: With dead ends: 1773 [2021-05-21 20:24:32,549 INFO L226 Difference]: Without dead ends: 1562 [2021-05-21 20:24:32,549 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 [2021-05-21 20:24:32,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-05-21 20:24:32,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 946. [2021-05-21 20:24:32,566 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) [2021-05-21 20:24:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 3581 transitions. [2021-05-21 20:24:32,568 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 3581 transitions. Word has length 25 [2021-05-21 20:24:32,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:32,568 INFO L482 AbstractCegarLoop]: Abstraction has 946 states and 3581 transitions. [2021-05-21 20:24:32,568 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) [2021-05-21 20:24:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 3581 transitions. [2021-05-21 20:24:32,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:32,569 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:32,569 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:32,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable682 [2021-05-21 20:24:32,569 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]=== [2021-05-21 20:24:32,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:32,569 INFO L82 PathProgramCache]: Analyzing trace with hash 4970301, now seen corresponding path program 679 times [2021-05-21 20:24:32,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:32,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709522281] [2021-05-21 20:24:32,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:32,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:32,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709522281] [2021-05-21 20:24:32,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709522281] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:32,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:32,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:32,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758309754] [2021-05-21 20:24:32,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:32,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:32,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:32,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:32,645 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) [2021-05-21 20:24:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:32,705 INFO L93 Difference]: Finished difference Result 1832 states and 6485 transitions. [2021-05-21 20:24:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:32,705 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 [2021-05-21 20:24:32,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:32,708 INFO L225 Difference]: With dead ends: 1832 [2021-05-21 20:24:32,708 INFO L226 Difference]: Without dead ends: 1643 [2021-05-21 20:24:32,708 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 [2021-05-21 20:24:32,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-05-21 20:24:32,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 946. [2021-05-21 20:24:32,726 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) [2021-05-21 20:24:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 3553 transitions. [2021-05-21 20:24:32,728 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 3553 transitions. Word has length 25 [2021-05-21 20:24:32,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:32,728 INFO L482 AbstractCegarLoop]: Abstraction has 946 states and 3553 transitions. [2021-05-21 20:24:32,728 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) [2021-05-21 20:24:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 3553 transitions. [2021-05-21 20:24:32,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:32,729 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:32,729 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] [2021-05-21 20:24:32,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable683 [2021-05-21 20:24:32,729 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]=== [2021-05-21 20:24:32,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:32,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1197436733, now seen corresponding path program 680 times [2021-05-21 20:24:32,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:32,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141892528] [2021-05-21 20:24:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:32,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:32,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141892528] [2021-05-21 20:24:32,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141892528] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:32,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:32,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:32,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375303934] [2021-05-21 20:24:32,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:32,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:32,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:32,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:32,803 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) [2021-05-21 20:24:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:32,854 INFO L93 Difference]: Finished difference Result 1826 states and 6440 transitions. [2021-05-21 20:24:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:32,855 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 [2021-05-21 20:24:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:32,857 INFO L225 Difference]: With dead ends: 1826 [2021-05-21 20:24:32,858 INFO L226 Difference]: Without dead ends: 1615 [2021-05-21 20:24:32,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-05-21 20:24:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 918. [2021-05-21 20:24:32,875 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) [2021-05-21 20:24:32,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 3451 transitions. [2021-05-21 20:24:32,877 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 3451 transitions. Word has length 25 [2021-05-21 20:24:32,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:32,877 INFO L482 AbstractCegarLoop]: Abstraction has 918 states and 3451 transitions. [2021-05-21 20:24:32,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:32,877 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 3451 transitions. [2021-05-21 20:24:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:32,878 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:32,878 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:32,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable684 [2021-05-21 20:24:32,878 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]=== [2021-05-21 20:24:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1021026109, now seen corresponding path program 681 times [2021-05-21 20:24:32,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:32,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698166133] [2021-05-21 20:24:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:32,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:32,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698166133] [2021-05-21 20:24:32,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698166133] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:32,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:32,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:32,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600588566] [2021-05-21 20:24:32,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:32,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:32,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:32,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:32,955 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) [2021-05-21 20:24:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:33,008 INFO L93 Difference]: Finished difference Result 1844 states and 6503 transitions. [2021-05-21 20:24:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:33,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:33,011 INFO L225 Difference]: With dead ends: 1844 [2021-05-21 20:24:33,011 INFO L226 Difference]: Without dead ends: 1655 [2021-05-21 20:24:33,011 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 [2021-05-21 20:24:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2021-05-21 20:24:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 981. [2021-05-21 20:24:33,029 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) [2021-05-21 20:24:33,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 3658 transitions. [2021-05-21 20:24:33,031 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 3658 transitions. Word has length 25 [2021-05-21 20:24:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:33,031 INFO L482 AbstractCegarLoop]: Abstraction has 981 states and 3658 transitions. [2021-05-21 20:24:33,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:33,031 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 3658 transitions. [2021-05-21 20:24:33,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:33,032 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:33,032 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:33,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable685 [2021-05-21 20:24:33,032 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]=== [2021-05-21 20:24:33,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:33,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1035245659, now seen corresponding path program 682 times [2021-05-21 20:24:33,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:33,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729697058] [2021-05-21 20:24:33,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:33,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:33,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729697058] [2021-05-21 20:24:33,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729697058] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:33,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:33,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:33,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396184669] [2021-05-21 20:24:33,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:33,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:33,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:33,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:33,108 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) [2021-05-21 20:24:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:33,147 INFO L93 Difference]: Finished difference Result 1749 states and 6201 transitions. [2021-05-21 20:24:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:33,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:33,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:33,150 INFO L225 Difference]: With dead ends: 1749 [2021-05-21 20:24:33,150 INFO L226 Difference]: Without dead ends: 1464 [2021-05-21 20:24:33,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:33,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-05-21 20:24:33,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 918. [2021-05-21 20:24:33,167 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) [2021-05-21 20:24:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 3421 transitions. [2021-05-21 20:24:33,168 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 3421 transitions. Word has length 25 [2021-05-21 20:24:33,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:33,168 INFO L482 AbstractCegarLoop]: Abstraction has 918 states and 3421 transitions. [2021-05-21 20:24:33,168 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) [2021-05-21 20:24:33,168 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 3421 transitions. [2021-05-21 20:24:33,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:33,169 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:33,170 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] [2021-05-21 20:24:33,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable686 [2021-05-21 20:24:33,170 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]=== [2021-05-21 20:24:33,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:33,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1987473499, now seen corresponding path program 683 times [2021-05-21 20:24:33,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:33,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763003597] [2021-05-21 20:24:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:33,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:33,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763003597] [2021-05-21 20:24:33,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763003597] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:33,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:33,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:33,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528835298] [2021-05-21 20:24:33,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:33,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:33,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:33,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:33,253 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) [2021-05-21 20:24:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:33,309 INFO L93 Difference]: Finished difference Result 1819 states and 6398 transitions. [2021-05-21 20:24:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:33,309 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 [2021-05-21 20:24:33,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:33,312 INFO L225 Difference]: With dead ends: 1819 [2021-05-21 20:24:33,312 INFO L226 Difference]: Without dead ends: 1636 [2021-05-21 20:24:33,312 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 [2021-05-21 20:24:33,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-05-21 20:24:33,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 962. [2021-05-21 20:24:33,330 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) [2021-05-21 20:24:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 3573 transitions. [2021-05-21 20:24:33,332 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 3573 transitions. Word has length 25 [2021-05-21 20:24:33,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:33,332 INFO L482 AbstractCegarLoop]: Abstraction has 962 states and 3573 transitions. [2021-05-21 20:24:33,332 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 3573 transitions. [2021-05-21 20:24:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:33,333 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:33,333 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] [2021-05-21 20:24:33,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable687 [2021-05-21 20:24:33,333 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]=== [2021-05-21 20:24:33,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:33,333 INFO L82 PathProgramCache]: Analyzing trace with hash 917954493, now seen corresponding path program 684 times [2021-05-21 20:24:33,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:33,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079698878] [2021-05-21 20:24:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:33,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:33,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079698878] [2021-05-21 20:24:33,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079698878] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:33,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:33,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:33,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042575025] [2021-05-21 20:24:33,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:33,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:33,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:33,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:33,420 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) [2021-05-21 20:24:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:33,459 INFO L93 Difference]: Finished difference Result 1730 states and 6116 transitions. [2021-05-21 20:24:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:33,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:33,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:33,461 INFO L225 Difference]: With dead ends: 1730 [2021-05-21 20:24:33,461 INFO L226 Difference]: Without dead ends: 1434 [2021-05-21 20:24:33,462 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-05-21 20:24:33,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 888. [2021-05-21 20:24:33,478 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) [2021-05-21 20:24:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 3322 transitions. [2021-05-21 20:24:33,479 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 3322 transitions. Word has length 25 [2021-05-21 20:24:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:33,479 INFO L482 AbstractCegarLoop]: Abstraction has 888 states and 3322 transitions. [2021-05-21 20:24:33,479 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) [2021-05-21 20:24:33,480 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 3322 transitions. [2021-05-21 20:24:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:33,481 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:33,481 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] [2021-05-21 20:24:33,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable688 [2021-05-21 20:24:33,481 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]=== [2021-05-21 20:24:33,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:33,481 INFO L82 PathProgramCache]: Analyzing trace with hash -784415969, now seen corresponding path program 685 times [2021-05-21 20:24:33,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:33,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397366861] [2021-05-21 20:24:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:33,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:33,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397366861] [2021-05-21 20:24:33,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397366861] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:33,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:33,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:33,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126396667] [2021-05-21 20:24:33,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:33,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:33,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:33,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:33,585 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) [2021-05-21 20:24:33,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:33,636 INFO L93 Difference]: Finished difference Result 1692 states and 5933 transitions. [2021-05-21 20:24:33,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:33,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:33,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:33,639 INFO L225 Difference]: With dead ends: 1692 [2021-05-21 20:24:33,639 INFO L226 Difference]: Without dead ends: 1503 [2021-05-21 20:24:33,639 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:33,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2021-05-21 20:24:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 888. [2021-05-21 20:24:33,656 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) [2021-05-21 20:24:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 3298 transitions. [2021-05-21 20:24:33,658 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 3298 transitions. Word has length 25 [2021-05-21 20:24:33,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:33,658 INFO L482 AbstractCegarLoop]: Abstraction has 888 states and 3298 transitions. [2021-05-21 20:24:33,658 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) [2021-05-21 20:24:33,658 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 3298 transitions. [2021-05-21 20:24:33,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:33,659 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:33,659 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] [2021-05-21 20:24:33,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable689 [2021-05-21 20:24:33,659 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]=== [2021-05-21 20:24:33,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:33,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1710065987, now seen corresponding path program 686 times [2021-05-21 20:24:33,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:33,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953041310] [2021-05-21 20:24:33,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:33,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:33,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953041310] [2021-05-21 20:24:33,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953041310] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:33,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:33,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:33,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784059054] [2021-05-21 20:24:33,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:33,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:33,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:33,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:33,757 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) [2021-05-21 20:24:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:33,809 INFO L93 Difference]: Finished difference Result 1678 states and 5864 transitions. [2021-05-21 20:24:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:33,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:33,812 INFO L225 Difference]: With dead ends: 1678 [2021-05-21 20:24:33,812 INFO L226 Difference]: Without dead ends: 1479 [2021-05-21 20:24:33,812 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 [2021-05-21 20:24:33,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-05-21 20:24:33,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 864. [2021-05-21 20:24:33,828 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) [2021-05-21 20:24:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3210 transitions. [2021-05-21 20:24:33,829 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 3210 transitions. Word has length 25 [2021-05-21 20:24:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:33,829 INFO L482 AbstractCegarLoop]: Abstraction has 864 states and 3210 transitions. [2021-05-21 20:24:33,829 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) [2021-05-21 20:24:33,829 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 3210 transitions. [2021-05-21 20:24:33,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:33,831 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:33,831 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:33,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable690 [2021-05-21 20:24:33,831 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]=== [2021-05-21 20:24:33,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:33,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1547196413, now seen corresponding path program 687 times [2021-05-21 20:24:33,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:33,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597410312] [2021-05-21 20:24:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:33,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:33,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597410312] [2021-05-21 20:24:33,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597410312] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:33,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:33,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:33,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122849152] [2021-05-21 20:24:33,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:33,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:33,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:33,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:33,916 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) [2021-05-21 20:24:33,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:33,968 INFO L93 Difference]: Finished difference Result 1653 states and 5759 transitions. [2021-05-21 20:24:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:33,969 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 [2021-05-21 20:24:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:33,971 INFO L225 Difference]: With dead ends: 1653 [2021-05-21 20:24:33,971 INFO L226 Difference]: Without dead ends: 1464 [2021-05-21 20:24:33,971 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:33,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-05-21 20:24:33,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 802. [2021-05-21 20:24:33,986 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) [2021-05-21 20:24:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2958 transitions. [2021-05-21 20:24:33,988 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2958 transitions. Word has length 25 [2021-05-21 20:24:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:33,988 INFO L482 AbstractCegarLoop]: Abstraction has 802 states and 2958 transitions. [2021-05-21 20:24:33,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2958 transitions. [2021-05-21 20:24:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:33,989 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:33,989 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:33,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable691 [2021-05-21 20:24:33,989 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]=== [2021-05-21 20:24:33,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:33,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1550119875, now seen corresponding path program 688 times [2021-05-21 20:24:33,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:33,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424589128] [2021-05-21 20:24:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:34,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:34,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424589128] [2021-05-21 20:24:34,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424589128] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:34,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:34,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:34,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614320028] [2021-05-21 20:24:34,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:34,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:34,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:34,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:34,083 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) [2021-05-21 20:24:34,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:34,123 INFO L93 Difference]: Finished difference Result 1558 states and 5457 transitions. [2021-05-21 20:24:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:34,123 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 [2021-05-21 20:24:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:34,125 INFO L225 Difference]: With dead ends: 1558 [2021-05-21 20:24:34,125 INFO L226 Difference]: Without dead ends: 1273 [2021-05-21 20:24:34,126 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 [2021-05-21 20:24:34,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-05-21 20:24:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 739. [2021-05-21 20:24:34,138 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) [2021-05-21 20:24:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 2723 transitions. [2021-05-21 20:24:34,139 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 2723 transitions. Word has length 25 [2021-05-21 20:24:34,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:34,140 INFO L482 AbstractCegarLoop]: Abstraction has 739 states and 2723 transitions. [2021-05-21 20:24:34,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 2723 transitions. [2021-05-21 20:24:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:34,141 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:34,141 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:34,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable692 [2021-05-21 20:24:34,141 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]=== [2021-05-21 20:24:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:34,141 INFO L82 PathProgramCache]: Analyzing trace with hash -929980325, now seen corresponding path program 689 times [2021-05-21 20:24:34,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:34,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355015182] [2021-05-21 20:24:34,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:34,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:34,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355015182] [2021-05-21 20:24:34,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355015182] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:34,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:34,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:34,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258976735] [2021-05-21 20:24:34,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:34,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:34,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:34,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:34,231 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) [2021-05-21 20:24:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:34,282 INFO L93 Difference]: Finished difference Result 1488 states and 5227 transitions. [2021-05-21 20:24:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:34,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:34,285 INFO L225 Difference]: With dead ends: 1488 [2021-05-21 20:24:34,285 INFO L226 Difference]: Without dead ends: 1313 [2021-05-21 20:24:34,285 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 [2021-05-21 20:24:34,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2021-05-21 20:24:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 779. [2021-05-21 20:24:34,298 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) [2021-05-21 20:24:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 2863 transitions. [2021-05-21 20:24:34,299 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 2863 transitions. Word has length 25 [2021-05-21 20:24:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:34,299 INFO L482 AbstractCegarLoop]: Abstraction has 779 states and 2863 transitions. [2021-05-21 20:24:34,299 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) [2021-05-21 20:24:34,299 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 2863 transitions. [2021-05-21 20:24:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:34,300 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:34,300 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:34,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable693 [2021-05-21 20:24:34,301 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]=== [2021-05-21 20:24:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:34,301 INFO L82 PathProgramCache]: Analyzing trace with hash -711628739, now seen corresponding path program 690 times [2021-05-21 20:24:34,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:34,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901135189] [2021-05-21 20:24:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:34,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:34,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901135189] [2021-05-21 20:24:34,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901135189] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:34,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:34,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:34,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266886803] [2021-05-21 20:24:34,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:34,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:34,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:34,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:34,391 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) [2021-05-21 20:24:34,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:34,430 INFO L93 Difference]: Finished difference Result 1312 states and 4642 transitions. [2021-05-21 20:24:34,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:34,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:34,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:34,432 INFO L225 Difference]: With dead ends: 1312 [2021-05-21 20:24:34,432 INFO L226 Difference]: Without dead ends: 1022 [2021-05-21 20:24:34,432 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 [2021-05-21 20:24:34,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-05-21 20:24:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 711. [2021-05-21 20:24:34,444 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) [2021-05-21 20:24:34,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 2629 transitions. [2021-05-21 20:24:34,445 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 2629 transitions. Word has length 25 [2021-05-21 20:24:34,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:34,445 INFO L482 AbstractCegarLoop]: Abstraction has 711 states and 2629 transitions. [2021-05-21 20:24:34,445 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) [2021-05-21 20:24:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 2629 transitions. [2021-05-21 20:24:34,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:34,446 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:34,446 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:34,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable694 [2021-05-21 20:24:34,446 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]=== [2021-05-21 20:24:34,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:34,446 INFO L82 PathProgramCache]: Analyzing trace with hash -30381989, now seen corresponding path program 691 times [2021-05-21 20:24:34,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:34,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148278405] [2021-05-21 20:24:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:34,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:34,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148278405] [2021-05-21 20:24:34,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148278405] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:34,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:34,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:34,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408753420] [2021-05-21 20:24:34,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:34,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:34,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:34,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:34,529 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) [2021-05-21 20:24:34,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:34,580 INFO L93 Difference]: Finished difference Result 1477 states and 5238 transitions. [2021-05-21 20:24:34,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:34,580 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 [2021-05-21 20:24:34,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:34,582 INFO L225 Difference]: With dead ends: 1477 [2021-05-21 20:24:34,582 INFO L226 Difference]: Without dead ends: 1294 [2021-05-21 20:24:34,582 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 [2021-05-21 20:24:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2021-05-21 20:24:34,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 755. [2021-05-21 20:24:34,595 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) [2021-05-21 20:24:34,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 2797 transitions. [2021-05-21 20:24:34,596 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 2797 transitions. Word has length 25 [2021-05-21 20:24:34,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:34,596 INFO L482 AbstractCegarLoop]: Abstraction has 755 states and 2797 transitions. [2021-05-21 20:24:34,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:34,596 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 2797 transitions. [2021-05-21 20:24:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:34,597 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:34,597 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] [2021-05-21 20:24:34,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable695 [2021-05-21 20:24:34,597 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]=== [2021-05-21 20:24:34,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:34,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1050680637, now seen corresponding path program 692 times [2021-05-21 20:24:34,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:34,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153656401] [2021-05-21 20:24:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:34,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:34,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153656401] [2021-05-21 20:24:34,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153656401] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:34,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:34,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:34,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347228166] [2021-05-21 20:24:34,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:34,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:34,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:34,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:34,679 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) [2021-05-21 20:24:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:34,729 INFO L93 Difference]: Finished difference Result 1469 states and 5186 transitions. [2021-05-21 20:24:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:34,729 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 [2021-05-21 20:24:34,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:34,731 INFO L225 Difference]: With dead ends: 1469 [2021-05-21 20:24:34,732 INFO L226 Difference]: Without dead ends: 1270 [2021-05-21 20:24:34,732 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-05-21 20:24:34,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 731. [2021-05-21 20:24:34,744 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) [2021-05-21 20:24:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2709 transitions. [2021-05-21 20:24:34,745 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2709 transitions. Word has length 25 [2021-05-21 20:24:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:34,746 INFO L482 AbstractCegarLoop]: Abstraction has 731 states and 2709 transitions. [2021-05-21 20:24:34,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2709 transitions. [2021-05-21 20:24:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:34,746 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:34,746 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:34,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable696 [2021-05-21 20:24:34,747 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]=== [2021-05-21 20:24:34,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:34,747 INFO L82 PathProgramCache]: Analyzing trace with hash -647905347, now seen corresponding path program 693 times [2021-05-21 20:24:34,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:34,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301868680] [2021-05-21 20:24:34,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:34,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:34,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301868680] [2021-05-21 20:24:34,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301868680] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:34,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:34,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:34,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845968697] [2021-05-21 20:24:34,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:34,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:34,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:34,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:34,837 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) [2021-05-21 20:24:34,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:34,887 INFO L93 Difference]: Finished difference Result 1397 states and 4922 transitions. [2021-05-21 20:24:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:34,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:34,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:34,889 INFO L225 Difference]: With dead ends: 1397 [2021-05-21 20:24:34,889 INFO L226 Difference]: Without dead ends: 1214 [2021-05-21 20:24:34,889 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 [2021-05-21 20:24:34,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2021-05-21 20:24:34,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 775. [2021-05-21 20:24:34,901 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) [2021-05-21 20:24:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2861 transitions. [2021-05-21 20:24:34,903 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2861 transitions. Word has length 25 [2021-05-21 20:24:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:34,903 INFO L482 AbstractCegarLoop]: Abstraction has 775 states and 2861 transitions. [2021-05-21 20:24:34,903 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) [2021-05-21 20:24:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2861 transitions. [2021-05-21 20:24:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:34,904 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:34,904 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:34,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable697 [2021-05-21 20:24:34,904 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]=== [2021-05-21 20:24:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:34,904 INFO L82 PathProgramCache]: Analyzing trace with hash 121866173, now seen corresponding path program 694 times [2021-05-21 20:24:34,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:34,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364463675] [2021-05-21 20:24:34,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:34,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:34,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364463675] [2021-05-21 20:24:34,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364463675] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:34,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:34,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:34,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415384723] [2021-05-21 20:24:34,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:34,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:34,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:34,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:34,996 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) [2021-05-21 20:24:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:35,037 INFO L93 Difference]: Finished difference Result 1308 states and 4640 transitions. [2021-05-21 20:24:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:35,037 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 [2021-05-21 20:24:35,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:35,039 INFO L225 Difference]: With dead ends: 1308 [2021-05-21 20:24:35,039 INFO L226 Difference]: Without dead ends: 1042 [2021-05-21 20:24:35,039 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 [2021-05-21 20:24:35,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-05-21 20:24:35,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 731. [2021-05-21 20:24:35,051 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) [2021-05-21 20:24:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2689 transitions. [2021-05-21 20:24:35,052 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2689 transitions. Word has length 25 [2021-05-21 20:24:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:35,052 INFO L482 AbstractCegarLoop]: Abstraction has 731 states and 2689 transitions. [2021-05-21 20:24:35,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2689 transitions. [2021-05-21 20:24:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:35,053 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:35,053 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:35,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable698 [2021-05-21 20:24:35,053 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]=== [2021-05-21 20:24:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:35,053 INFO L82 PathProgramCache]: Analyzing trace with hash -259900385, now seen corresponding path program 695 times [2021-05-21 20:24:35,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:35,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448064645] [2021-05-21 20:24:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:35,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:35,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448064645] [2021-05-21 20:24:35,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448064645] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:35,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:35,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:35,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134261101] [2021-05-21 20:24:35,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:35,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:35,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:35,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:35,143 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) [2021-05-21 20:24:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:35,195 INFO L93 Difference]: Finished difference Result 1169 states and 4133 transitions. [2021-05-21 20:24:35,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:35,196 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 [2021-05-21 20:24:35,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:35,197 INFO L225 Difference]: With dead ends: 1169 [2021-05-21 20:24:35,197 INFO L226 Difference]: Without dead ends: 994 [2021-05-21 20:24:35,197 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 [2021-05-21 20:24:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-05-21 20:24:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 771. [2021-05-21 20:24:35,209 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) [2021-05-21 20:24:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 2829 transitions. [2021-05-21 20:24:35,210 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 2829 transitions. Word has length 25 [2021-05-21 20:24:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:35,210 INFO L482 AbstractCegarLoop]: Abstraction has 771 states and 2829 transitions. [2021-05-21 20:24:35,210 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) [2021-05-21 20:24:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 2829 transitions. [2021-05-21 20:24:35,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:35,211 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:35,211 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] [2021-05-21 20:24:35,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable699 [2021-05-21 20:24:35,211 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]=== [2021-05-21 20:24:35,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:35,211 INFO L82 PathProgramCache]: Analyzing trace with hash -2080935811, now seen corresponding path program 696 times [2021-05-21 20:24:35,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:35,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131189394] [2021-05-21 20:24:35,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:35,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:35,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131189394] [2021-05-21 20:24:35,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131189394] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:35,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:35,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:35,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356471699] [2021-05-21 20:24:35,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:35,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:35,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:35,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:35,301 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) [2021-05-21 20:24:35,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:35,341 INFO L93 Difference]: Finished difference Result 993 states and 3548 transitions. [2021-05-21 20:24:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:35,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:35,342 INFO L225 Difference]: With dead ends: 993 [2021-05-21 20:24:35,342 INFO L226 Difference]: Without dead ends: 697 [2021-05-21 20:24:35,342 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 [2021-05-21 20:24:35,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-05-21 20:24:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2021-05-21 20:24:35,352 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) [2021-05-21 20:24:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2589 transitions. [2021-05-21 20:24:35,353 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2589 transitions. Word has length 25 [2021-05-21 20:24:35,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:35,353 INFO L482 AbstractCegarLoop]: Abstraction has 697 states and 2589 transitions. [2021-05-21 20:24:35,353 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) [2021-05-21 20:24:35,353 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2589 transitions. [2021-05-21 20:24:35,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:35,354 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:35,354 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] [2021-05-21 20:24:35,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable700 [2021-05-21 20:24:35,354 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]=== [2021-05-21 20:24:35,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:35,354 INFO L82 PathProgramCache]: Analyzing trace with hash 738750649, now seen corresponding path program 697 times [2021-05-21 20:24:35,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:35,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219004823] [2021-05-21 20:24:35,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:35,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:35,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219004823] [2021-05-21 20:24:35,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219004823] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:35,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:35,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:35,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631207302] [2021-05-21 20:24:35,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:35,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:35,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:35,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:35,429 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) [2021-05-21 20:24:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:35,478 INFO L93 Difference]: Finished difference Result 1284 states and 4495 transitions. [2021-05-21 20:24:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:35,478 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 [2021-05-21 20:24:35,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:35,480 INFO L225 Difference]: With dead ends: 1284 [2021-05-21 20:24:35,480 INFO L226 Difference]: Without dead ends: 1097 [2021-05-21 20:24:35,480 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 [2021-05-21 20:24:35,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2021-05-21 20:24:35,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 725. [2021-05-21 20:24:35,492 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) [2021-05-21 20:24:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 2677 transitions. [2021-05-21 20:24:35,493 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 2677 transitions. Word has length 25 [2021-05-21 20:24:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:35,493 INFO L482 AbstractCegarLoop]: Abstraction has 725 states and 2677 transitions. [2021-05-21 20:24:35,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:35,493 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 2677 transitions. [2021-05-21 20:24:35,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:35,494 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:35,494 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:35,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable701 [2021-05-21 20:24:35,494 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]=== [2021-05-21 20:24:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:35,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1819813275, now seen corresponding path program 698 times [2021-05-21 20:24:35,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:35,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433903848] [2021-05-21 20:24:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:35,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:35,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433903848] [2021-05-21 20:24:35,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433903848] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:35,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:35,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:35,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796059808] [2021-05-21 20:24:35,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:35,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:35,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:35,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:35,572 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) [2021-05-21 20:24:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:35,621 INFO L93 Difference]: Finished difference Result 1280 states and 4455 transitions. [2021-05-21 20:24:35,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:35,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:35,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:35,623 INFO L225 Difference]: With dead ends: 1280 [2021-05-21 20:24:35,623 INFO L226 Difference]: Without dead ends: 1069 [2021-05-21 20:24:35,623 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 [2021-05-21 20:24:35,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-05-21 20:24:35,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 697. [2021-05-21 20:24:35,634 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) [2021-05-21 20:24:35,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2577 transitions. [2021-05-21 20:24:35,635 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2577 transitions. Word has length 25 [2021-05-21 20:24:35,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:35,635 INFO L482 AbstractCegarLoop]: Abstraction has 697 states and 2577 transitions. [2021-05-21 20:24:35,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2577 transitions. [2021-05-21 20:24:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:35,636 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:35,636 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:35,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable702 [2021-05-21 20:24:35,636 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]=== [2021-05-21 20:24:35,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:35,637 INFO L82 PathProgramCache]: Analyzing trace with hash 257848603, now seen corresponding path program 699 times [2021-05-21 20:24:35,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:35,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442257118] [2021-05-21 20:24:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:35,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:35,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442257118] [2021-05-21 20:24:35,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442257118] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:35,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:35,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:35,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861428209] [2021-05-21 20:24:35,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:35,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:35,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:35,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:35,712 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) [2021-05-21 20:24:35,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:35,780 INFO L93 Difference]: Finished difference Result 1272 states and 4439 transitions. [2021-05-21 20:24:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:35,780 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 [2021-05-21 20:24:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:35,782 INFO L225 Difference]: With dead ends: 1272 [2021-05-21 20:24:35,782 INFO L226 Difference]: Without dead ends: 1085 [2021-05-21 20:24:35,782 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 [2021-05-21 20:24:35,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-05-21 20:24:35,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 721. [2021-05-21 20:24:35,794 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) [2021-05-21 20:24:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2653 transitions. [2021-05-21 20:24:35,795 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2653 transitions. Word has length 25 [2021-05-21 20:24:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:35,795 INFO L482 AbstractCegarLoop]: Abstraction has 721 states and 2653 transitions. [2021-05-21 20:24:35,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2653 transitions. [2021-05-21 20:24:35,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:35,796 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:35,796 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:35,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable703 [2021-05-21 20:24:35,796 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]=== [2021-05-21 20:24:35,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:35,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1430397669, now seen corresponding path program 700 times [2021-05-21 20:24:35,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:35,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925623295] [2021-05-21 20:24:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:35,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:35,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925623295] [2021-05-21 20:24:35,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925623295] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:35,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:35,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:35,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522617667] [2021-05-21 20:24:35,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:35,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:35,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:35,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:35,871 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) [2021-05-21 20:24:35,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:35,921 INFO L93 Difference]: Finished difference Result 1260 states and 4375 transitions. [2021-05-21 20:24:35,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:35,921 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 [2021-05-21 20:24:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:35,923 INFO L225 Difference]: With dead ends: 1260 [2021-05-21 20:24:35,923 INFO L226 Difference]: Without dead ends: 1061 [2021-05-21 20:24:35,923 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 [2021-05-21 20:24:35,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2021-05-21 20:24:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 697. [2021-05-21 20:24:35,935 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) [2021-05-21 20:24:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2565 transitions. [2021-05-21 20:24:35,936 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2565 transitions. Word has length 25 [2021-05-21 20:24:35,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:35,936 INFO L482 AbstractCegarLoop]: Abstraction has 697 states and 2565 transitions. [2021-05-21 20:24:35,936 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) [2021-05-21 20:24:35,936 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2565 transitions. [2021-05-21 20:24:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:35,937 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:35,937 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:35,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable704 [2021-05-21 20:24:35,937 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]=== [2021-05-21 20:24:35,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:35,937 INFO L82 PathProgramCache]: Analyzing trace with hash 645853565, now seen corresponding path program 701 times [2021-05-21 20:24:35,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:35,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755350270] [2021-05-21 20:24:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:36,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:36,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755350270] [2021-05-21 20:24:36,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755350270] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:36,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:36,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:36,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900566330] [2021-05-21 20:24:36,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:36,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:36,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:36,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:36,014 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) [2021-05-21 20:24:36,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:36,063 INFO L93 Difference]: Finished difference Result 1264 states and 4403 transitions. [2021-05-21 20:24:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:36,063 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 [2021-05-21 20:24:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:36,065 INFO L225 Difference]: With dead ends: 1264 [2021-05-21 20:24:36,065 INFO L226 Difference]: Without dead ends: 1081 [2021-05-21 20:24:36,065 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 [2021-05-21 20:24:36,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2021-05-21 20:24:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 721. [2021-05-21 20:24:36,081 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) [2021-05-21 20:24:36,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2641 transitions. [2021-05-21 20:24:36,082 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2641 transitions. Word has length 25 [2021-05-21 20:24:36,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:36,083 INFO L482 AbstractCegarLoop]: Abstraction has 721 states and 2641 transitions. [2021-05-21 20:24:36,083 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:36,083 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2641 transitions. [2021-05-21 20:24:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:36,084 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:36,084 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] [2021-05-21 20:24:36,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable705 [2021-05-21 20:24:36,084 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]=== [2021-05-21 20:24:36,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:36,084 INFO L82 PathProgramCache]: Analyzing trace with hash -200943397, now seen corresponding path program 702 times [2021-05-21 20:24:36,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:36,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079335187] [2021-05-21 20:24:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:36,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:36,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079335187] [2021-05-21 20:24:36,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079335187] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:36,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:36,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:36,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990058458] [2021-05-21 20:24:36,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:36,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:36,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:36,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:36,169 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) [2021-05-21 20:24:36,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:36,219 INFO L93 Difference]: Finished difference Result 1256 states and 4351 transitions. [2021-05-21 20:24:36,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:36,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:36,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:36,221 INFO L225 Difference]: With dead ends: 1256 [2021-05-21 20:24:36,221 INFO L226 Difference]: Without dead ends: 1045 [2021-05-21 20:24:36,221 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 [2021-05-21 20:24:36,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-05-21 20:24:36,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 685. [2021-05-21 20:24:36,233 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) [2021-05-21 20:24:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2527 transitions. [2021-05-21 20:24:36,234 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2527 transitions. Word has length 25 [2021-05-21 20:24:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:36,234 INFO L482 AbstractCegarLoop]: Abstraction has 685 states and 2527 transitions. [2021-05-21 20:24:36,234 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) [2021-05-21 20:24:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2527 transitions. [2021-05-21 20:24:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:36,235 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:36,235 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] [2021-05-21 20:24:36,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable706 [2021-05-21 20:24:36,242 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]=== [2021-05-21 20:24:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:36,242 INFO L82 PathProgramCache]: Analyzing trace with hash 4290459, now seen corresponding path program 703 times [2021-05-21 20:24:36,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:36,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320848814] [2021-05-21 20:24:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:36,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:36,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320848814] [2021-05-21 20:24:36,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320848814] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:36,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:36,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:36,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861885968] [2021-05-21 20:24:36,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:36,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:36,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:36,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:36,317 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) [2021-05-21 20:24:36,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:36,365 INFO L93 Difference]: Finished difference Result 1244 states and 4317 transitions. [2021-05-21 20:24:36,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:36,365 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 [2021-05-21 20:24:36,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:36,367 INFO L225 Difference]: With dead ends: 1244 [2021-05-21 20:24:36,367 INFO L226 Difference]: Without dead ends: 1057 [2021-05-21 20:24:36,367 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 [2021-05-21 20:24:36,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2021-05-21 20:24:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 685. [2021-05-21 20:24:36,378 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) [2021-05-21 20:24:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2499 transitions. [2021-05-21 20:24:36,379 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2499 transitions. Word has length 25 [2021-05-21 20:24:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:36,379 INFO L482 AbstractCegarLoop]: Abstraction has 685 states and 2499 transitions. [2021-05-21 20:24:36,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2499 transitions. [2021-05-21 20:24:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:36,380 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:36,380 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] [2021-05-21 20:24:36,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable707 [2021-05-21 20:24:36,380 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]=== [2021-05-21 20:24:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:36,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1085353085, now seen corresponding path program 704 times [2021-05-21 20:24:36,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:36,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041396387] [2021-05-21 20:24:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:36,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:36,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041396387] [2021-05-21 20:24:36,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041396387] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:36,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:36,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:36,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390313104] [2021-05-21 20:24:36,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:36,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:36,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:36,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:36,458 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) [2021-05-21 20:24:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:36,507 INFO L93 Difference]: Finished difference Result 1240 states and 4277 transitions. [2021-05-21 20:24:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:36,507 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 [2021-05-21 20:24:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:36,509 INFO L225 Difference]: With dead ends: 1240 [2021-05-21 20:24:36,509 INFO L226 Difference]: Without dead ends: 1029 [2021-05-21 20:24:36,509 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 [2021-05-21 20:24:36,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-05-21 20:24:36,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 657. [2021-05-21 20:24:36,519 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) [2021-05-21 20:24:36,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2397 transitions. [2021-05-21 20:24:36,520 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2397 transitions. Word has length 25 [2021-05-21 20:24:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:36,520 INFO L482 AbstractCegarLoop]: Abstraction has 657 states and 2397 transitions. [2021-05-21 20:24:36,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:36,521 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2397 transitions. [2021-05-21 20:24:36,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:36,521 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:36,521 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:36,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable708 [2021-05-21 20:24:36,521 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]=== [2021-05-21 20:24:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1020346267, now seen corresponding path program 705 times [2021-05-21 20:24:36,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:36,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781140535] [2021-05-21 20:24:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:36,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:36,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781140535] [2021-05-21 20:24:36,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781140535] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:36,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:36,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:36,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670211958] [2021-05-21 20:24:36,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:36,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:36,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:36,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:36,598 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) [2021-05-21 20:24:36,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:36,648 INFO L93 Difference]: Finished difference Result 1241 states and 4289 transitions. [2021-05-21 20:24:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:36,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:36,650 INFO L225 Difference]: With dead ends: 1241 [2021-05-21 20:24:36,650 INFO L226 Difference]: Without dead ends: 1054 [2021-05-21 20:24:36,650 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 [2021-05-21 20:24:36,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2021-05-21 20:24:36,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 703. [2021-05-21 20:24:36,661 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) [2021-05-21 20:24:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 2554 transitions. [2021-05-21 20:24:36,662 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 2554 transitions. Word has length 25 [2021-05-21 20:24:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:36,662 INFO L482 AbstractCegarLoop]: Abstraction has 703 states and 2554 transitions. [2021-05-21 20:24:36,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 2554 transitions. [2021-05-21 20:24:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:36,663 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:36,663 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:36,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable709 [2021-05-21 20:24:36,663 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]=== [2021-05-21 20:24:36,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:36,663 INFO L82 PathProgramCache]: Analyzing trace with hash -767035493, now seen corresponding path program 706 times [2021-05-21 20:24:36,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:36,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789792498] [2021-05-21 20:24:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:36,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:36,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789792498] [2021-05-21 20:24:36,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789792498] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:36,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:36,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:36,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341108411] [2021-05-21 20:24:36,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:36,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:36,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:36,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:36,740 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) [2021-05-21 20:24:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:36,776 INFO L93 Difference]: Finished difference Result 1148 states and 3993 transitions. [2021-05-21 20:24:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:36,776 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 [2021-05-21 20:24:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:36,777 INFO L225 Difference]: With dead ends: 1148 [2021-05-21 20:24:36,777 INFO L226 Difference]: Without dead ends: 880 [2021-05-21 20:24:36,777 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 [2021-05-21 20:24:36,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-05-21 20:24:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 657. [2021-05-21 20:24:36,787 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) [2021-05-21 20:24:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2375 transitions. [2021-05-21 20:24:36,788 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2375 transitions. Word has length 25 [2021-05-21 20:24:36,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:36,788 INFO L482 AbstractCegarLoop]: Abstraction has 657 states and 2375 transitions. [2021-05-21 20:24:36,788 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) [2021-05-21 20:24:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2375 transitions. [2021-05-21 20:24:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:36,789 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:36,789 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:36,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable710 [2021-05-21 20:24:36,789 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]=== [2021-05-21 20:24:36,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:36,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1408351229, now seen corresponding path program 707 times [2021-05-21 20:24:36,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:36,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550625896] [2021-05-21 20:24:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:36,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:36,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550625896] [2021-05-21 20:24:36,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550625896] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:36,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:36,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:36,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562755931] [2021-05-21 20:24:36,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:36,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:36,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:36,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:36,876 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) [2021-05-21 20:24:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:36,922 INFO L93 Difference]: Finished difference Result 1235 states and 4248 transitions. [2021-05-21 20:24:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:36,923 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 [2021-05-21 20:24:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:36,924 INFO L225 Difference]: With dead ends: 1235 [2021-05-21 20:24:36,924 INFO L226 Difference]: Without dead ends: 1052 [2021-05-21 20:24:36,924 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 [2021-05-21 20:24:36,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-05-21 20:24:36,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 701. [2021-05-21 20:24:36,940 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) [2021-05-21 20:24:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 2527 transitions. [2021-05-21 20:24:36,941 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 2527 transitions. Word has length 25 [2021-05-21 20:24:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:36,942 INFO L482 AbstractCegarLoop]: Abstraction has 701 states and 2527 transitions. [2021-05-21 20:24:36,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 2527 transitions. [2021-05-21 20:24:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:36,943 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:36,943 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:36,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable711 [2021-05-21 20:24:36,943 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]=== [2021-05-21 20:24:36,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:36,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1681966885, now seen corresponding path program 708 times [2021-05-21 20:24:36,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:36,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537189102] [2021-05-21 20:24:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:37,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:37,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537189102] [2021-05-21 20:24:37,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537189102] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:37,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:37,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:37,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988954043] [2021-05-21 20:24:37,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:37,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:37,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:37,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:37,032 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) [2021-05-21 20:24:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:37,068 INFO L93 Difference]: Finished difference Result 1146 states and 3966 transitions. [2021-05-21 20:24:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:37,068 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 [2021-05-21 20:24:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:37,070 INFO L225 Difference]: With dead ends: 1146 [2021-05-21 20:24:37,070 INFO L226 Difference]: Without dead ends: 858 [2021-05-21 20:24:37,070 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 [2021-05-21 20:24:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2021-05-21 20:24:37,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 635. [2021-05-21 20:24:37,082 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) [2021-05-21 20:24:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 2300 transitions. [2021-05-21 20:24:37,083 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 2300 transitions. Word has length 25 [2021-05-21 20:24:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:37,083 INFO L482 AbstractCegarLoop]: Abstraction has 635 states and 2300 transitions. [2021-05-21 20:24:37,083 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 2300 transitions. [2021-05-21 20:24:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:37,084 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:37,084 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] [2021-05-21 20:24:37,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable712 [2021-05-21 20:24:37,084 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]=== [2021-05-21 20:24:37,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:37,084 INFO L82 PathProgramCache]: Analyzing trace with hash -785095811, now seen corresponding path program 709 times [2021-05-21 20:24:37,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:37,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492882651] [2021-05-21 20:24:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:37,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:37,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492882651] [2021-05-21 20:24:37,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492882651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:37,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:37,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:37,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259715496] [2021-05-21 20:24:37,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:37,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:37,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:37,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:37,159 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) [2021-05-21 20:24:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:37,206 INFO L93 Difference]: Finished difference Result 1126 states and 3846 transitions. [2021-05-21 20:24:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:37,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:37,208 INFO L225 Difference]: With dead ends: 1126 [2021-05-21 20:24:37,208 INFO L226 Difference]: Without dead ends: 939 [2021-05-21 20:24:37,208 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 [2021-05-21 20:24:37,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2021-05-21 20:24:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 635. [2021-05-21 20:24:37,218 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) [2021-05-21 20:24:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 2276 transitions. [2021-05-21 20:24:37,219 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 2276 transitions. Word has length 25 [2021-05-21 20:24:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:37,219 INFO L482 AbstractCegarLoop]: Abstraction has 635 states and 2276 transitions. [2021-05-21 20:24:37,219 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) [2021-05-21 20:24:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 2276 transitions. [2021-05-21 20:24:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:37,220 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:37,220 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] [2021-05-21 20:24:37,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable713 [2021-05-21 20:24:37,220 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]=== [2021-05-21 20:24:37,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:37,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1821625213, now seen corresponding path program 710 times [2021-05-21 20:24:37,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:37,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363087727] [2021-05-21 20:24:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:37,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:37,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363087727] [2021-05-21 20:24:37,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363087727] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:37,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:37,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:37,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088663515] [2021-05-21 20:24:37,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:37,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:37,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:37,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:37,295 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) [2021-05-21 20:24:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:37,344 INFO L93 Difference]: Finished difference Result 1114 states and 3782 transitions. [2021-05-21 20:24:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:37,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:37,345 INFO L225 Difference]: With dead ends: 1114 [2021-05-21 20:24:37,345 INFO L226 Difference]: Without dead ends: 915 [2021-05-21 20:24:37,345 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 [2021-05-21 20:24:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-05-21 20:24:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 611. [2021-05-21 20:24:37,355 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) [2021-05-21 20:24:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 2188 transitions. [2021-05-21 20:24:37,356 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 2188 transitions. Word has length 25 [2021-05-21 20:24:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:37,356 INFO L482 AbstractCegarLoop]: Abstraction has 611 states and 2188 transitions. [2021-05-21 20:24:37,356 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) [2021-05-21 20:24:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 2188 transitions. [2021-05-21 20:24:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:37,357 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:37,357 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] [2021-05-21 20:24:37,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable714 [2021-05-21 20:24:37,357 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]=== [2021-05-21 20:24:37,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:37,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1546516571, now seen corresponding path program 711 times [2021-05-21 20:24:37,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:37,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667046707] [2021-05-21 20:24:37,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:37,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:37,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667046707] [2021-05-21 20:24:37,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667046707] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:37,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:37,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:37,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552435375] [2021-05-21 20:24:37,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:37,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:37,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:37,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:37,435 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) [2021-05-21 20:24:37,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:37,481 INFO L93 Difference]: Finished difference Result 1089 states and 3677 transitions. [2021-05-21 20:24:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:37,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:37,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:37,482 INFO L225 Difference]: With dead ends: 1089 [2021-05-21 20:24:37,482 INFO L226 Difference]: Without dead ends: 902 [2021-05-21 20:24:37,483 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 [2021-05-21 20:24:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-05-21 20:24:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 551. [2021-05-21 20:24:37,491 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) [2021-05-21 20:24:37,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 1942 transitions. [2021-05-21 20:24:37,492 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 1942 transitions. Word has length 25 [2021-05-21 20:24:37,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:37,492 INFO L482 AbstractCegarLoop]: Abstraction has 551 states and 1942 transitions. [2021-05-21 20:24:37,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:37,492 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 1942 transitions. [2021-05-21 20:24:37,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:37,493 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:37,493 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:37,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable715 [2021-05-21 20:24:37,493 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]=== [2021-05-21 20:24:37,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:37,493 INFO L82 PathProgramCache]: Analyzing trace with hash 942566269, now seen corresponding path program 712 times [2021-05-21 20:24:37,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:37,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523907147] [2021-05-21 20:24:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:37,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:37,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523907147] [2021-05-21 20:24:37,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523907147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:37,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:37,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:37,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213136250] [2021-05-21 20:24:37,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:37,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:37,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:37,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:37,571 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) [2021-05-21 20:24:37,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:37,604 INFO L93 Difference]: Finished difference Result 996 states and 3381 transitions. [2021-05-21 20:24:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:37,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:37,605 INFO L225 Difference]: With dead ends: 996 [2021-05-21 20:24:37,605 INFO L226 Difference]: Without dead ends: 728 [2021-05-21 20:24:37,606 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 [2021-05-21 20:24:37,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-05-21 20:24:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 505. [2021-05-21 20:24:37,613 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) [2021-05-21 20:24:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1765 transitions. [2021-05-21 20:24:37,613 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1765 transitions. Word has length 25 [2021-05-21 20:24:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:37,613 INFO L482 AbstractCegarLoop]: Abstraction has 505 states and 1765 transitions. [2021-05-21 20:24:37,614 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) [2021-05-21 20:24:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1765 transitions. [2021-05-21 20:24:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:37,614 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:37,614 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] [2021-05-21 20:24:37,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable716 [2021-05-21 20:24:37,614 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]=== [2021-05-21 20:24:37,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:37,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2134672253, now seen corresponding path program 713 times [2021-05-21 20:24:37,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:37,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913508561] [2021-05-21 20:24:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:37,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:37,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913508561] [2021-05-21 20:24:37,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913508561] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:37,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:37,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:37,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102457402] [2021-05-21 20:24:37,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:37,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:37,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:37,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:37,701 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) [2021-05-21 20:24:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:37,746 INFO L93 Difference]: Finished difference Result 943 states and 3209 transitions. [2021-05-21 20:24:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:37,746 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 [2021-05-21 20:24:37,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:37,748 INFO L225 Difference]: With dead ends: 943 [2021-05-21 20:24:37,748 INFO L226 Difference]: Without dead ends: 768 [2021-05-21 20:24:37,748 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 [2021-05-21 20:24:37,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-05-21 20:24:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 545. [2021-05-21 20:24:37,755 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) [2021-05-21 20:24:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 1905 transitions. [2021-05-21 20:24:37,756 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 1905 transitions. Word has length 25 [2021-05-21 20:24:37,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:37,756 INFO L482 AbstractCegarLoop]: Abstraction has 545 states and 1905 transitions. [2021-05-21 20:24:37,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 1905 transitions. [2021-05-21 20:24:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:37,757 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:37,757 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] [2021-05-21 20:24:37,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable717 [2021-05-21 20:24:37,757 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]=== [2021-05-21 20:24:37,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:37,757 INFO L82 PathProgramCache]: Analyzing trace with hash 313636827, now seen corresponding path program 714 times [2021-05-21 20:24:37,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:37,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221458416] [2021-05-21 20:24:37,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:37,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:37,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221458416] [2021-05-21 20:24:37,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221458416] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:37,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:37,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:37,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912638891] [2021-05-21 20:24:37,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:37,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:37,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:37,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:37,844 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) [2021-05-21 20:24:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:37,875 INFO L93 Difference]: Finished difference Result 767 states and 2624 transitions. [2021-05-21 20:24:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:37,875 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 [2021-05-21 20:24:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:37,876 INFO L225 Difference]: With dead ends: 767 [2021-05-21 20:24:37,876 INFO L226 Difference]: Without dead ends: 485 [2021-05-21 20:24:37,876 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 [2021-05-21 20:24:37,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-05-21 20:24:37,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2021-05-21 20:24:37,882 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) [2021-05-21 20:24:37,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1695 transitions. [2021-05-21 20:24:37,883 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1695 transitions. Word has length 25 [2021-05-21 20:24:37,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:37,883 INFO L482 AbstractCegarLoop]: Abstraction has 485 states and 1695 transitions. [2021-05-21 20:24:37,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:37,883 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1695 transitions. [2021-05-21 20:24:37,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:37,884 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:37,884 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:37,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable718 [2021-05-21 20:24:37,884 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]=== [2021-05-21 20:24:37,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:37,884 INFO L82 PathProgramCache]: Analyzing trace with hash -705575073, now seen corresponding path program 715 times [2021-05-21 20:24:37,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:37,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133557002] [2021-05-21 20:24:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:37,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:37,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133557002] [2021-05-21 20:24:37,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133557002] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:37,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:37,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:37,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997711105] [2021-05-21 20:24:37,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:37,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:37,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:37,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:37,968 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) [2021-05-21 20:24:38,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:38,012 INFO L93 Difference]: Finished difference Result 796 states and 2668 transitions. [2021-05-21 20:24:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:38,012 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 [2021-05-21 20:24:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:38,013 INFO L225 Difference]: With dead ends: 796 [2021-05-21 20:24:38,013 INFO L226 Difference]: Without dead ends: 613 [2021-05-21 20:24:38,013 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 [2021-05-21 20:24:38,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-05-21 20:24:38,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 485. [2021-05-21 20:24:38,020 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) [2021-05-21 20:24:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1671 transitions. [2021-05-21 20:24:38,020 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1671 transitions. Word has length 25 [2021-05-21 20:24:38,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:38,021 INFO L482 AbstractCegarLoop]: Abstraction has 485 states and 1671 transitions. [2021-05-21 20:24:38,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1671 transitions. [2021-05-21 20:24:38,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:38,021 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:38,021 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:38,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable719 [2021-05-21 20:24:38,021 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]=== [2021-05-21 20:24:38,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:38,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1552372035, now seen corresponding path program 716 times [2021-05-21 20:24:38,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:38,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232171766] [2021-05-21 20:24:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:38,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:38,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232171766] [2021-05-21 20:24:38,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232171766] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:38,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:38,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:38,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275150812] [2021-05-21 20:24:38,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:38,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:38,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:38,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:38,116 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) [2021-05-21 20:24:38,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:38,162 INFO L93 Difference]: Finished difference Result 788 states and 2616 transitions. [2021-05-21 20:24:38,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:38,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:38,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:38,163 INFO L225 Difference]: With dead ends: 788 [2021-05-21 20:24:38,163 INFO L226 Difference]: Without dead ends: 589 [2021-05-21 20:24:38,163 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 [2021-05-21 20:24:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-05-21 20:24:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 461. [2021-05-21 20:24:38,169 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) [2021-05-21 20:24:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1583 transitions. [2021-05-21 20:24:38,170 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1583 transitions. Word has length 25 [2021-05-21 20:24:38,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:38,170 INFO L482 AbstractCegarLoop]: Abstraction has 461 states and 1583 transitions. [2021-05-21 20:24:38,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1583 transitions. [2021-05-21 20:24:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:38,171 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:38,171 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:38,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable720 [2021-05-21 20:24:38,171 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]=== [2021-05-21 20:24:38,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:38,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1626037309, now seen corresponding path program 717 times [2021-05-21 20:24:38,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:38,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046134609] [2021-05-21 20:24:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:38,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:38,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046134609] [2021-05-21 20:24:38,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046134609] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:38,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:38,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:38,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620416096] [2021-05-21 20:24:38,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:38,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:38,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:38,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:38,267 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) [2021-05-21 20:24:38,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:38,310 INFO L93 Difference]: Finished difference Result 716 states and 2352 transitions. [2021-05-21 20:24:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:38,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-05-21 20:24:38,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:38,311 INFO L225 Difference]: With dead ends: 716 [2021-05-21 20:24:38,311 INFO L226 Difference]: Without dead ends: 533 [2021-05-21 20:24:38,311 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 [2021-05-21 20:24:38,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-05-21 20:24:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 405. [2021-05-21 20:24:38,316 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) [2021-05-21 20:24:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1351 transitions. [2021-05-21 20:24:38,317 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1351 transitions. Word has length 25 [2021-05-21 20:24:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:38,317 INFO L482 AbstractCegarLoop]: Abstraction has 405 states and 1351 transitions. [2021-05-21 20:24:38,317 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) [2021-05-21 20:24:38,317 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1351 transitions. [2021-05-21 20:24:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:38,318 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:38,318 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:38,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable721 [2021-05-21 20:24:38,318 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]=== [2021-05-21 20:24:38,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:38,318 INFO L82 PathProgramCache]: Analyzing trace with hash -280849347, now seen corresponding path program 718 times [2021-05-21 20:24:38,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:38,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40461836] [2021-05-21 20:24:38,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:38,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:38,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40461836] [2021-05-21 20:24:38,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40461836] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:38,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:38,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:38,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132935408] [2021-05-21 20:24:38,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:38,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:38,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:38,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:38,420 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) [2021-05-21 20:24:38,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:38,450 INFO L93 Difference]: Finished difference Result 627 states and 2070 transitions. [2021-05-21 20:24:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:38,450 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 [2021-05-21 20:24:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:38,451 INFO L225 Difference]: With dead ends: 627 [2021-05-21 20:24:38,451 INFO L226 Difference]: Without dead ends: 361 [2021-05-21 20:24:38,451 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 [2021-05-21 20:24:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-05-21 20:24:38,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2021-05-21 20:24:38,455 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) [2021-05-21 20:24:38,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1179 transitions. [2021-05-21 20:24:38,455 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1179 transitions. Word has length 25 [2021-05-21 20:24:38,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:38,455 INFO L482 AbstractCegarLoop]: Abstraction has 361 states and 1179 transitions. [2021-05-21 20:24:38,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:38,455 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1179 transitions. [2021-05-21 20:24:38,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:38,456 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:38,456 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:38,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable722 [2021-05-21 20:24:38,456 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]=== [2021-05-21 20:24:38,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:38,456 INFO L82 PathProgramCache]: Analyzing trace with hash 769289243, now seen corresponding path program 719 times [2021-05-21 20:24:38,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:38,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463175084] [2021-05-21 20:24:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:38,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:38,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463175084] [2021-05-21 20:24:38,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463175084] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:38,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:38,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:38,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902902682] [2021-05-21 20:24:38,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:38,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:38,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:38,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:38,555 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) [2021-05-21 20:24:38,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:38,595 INFO L93 Difference]: Finished difference Result 488 states and 1563 transitions. [2021-05-21 20:24:38,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:38,596 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 [2021-05-21 20:24:38,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:38,596 INFO L225 Difference]: With dead ends: 488 [2021-05-21 20:24:38,596 INFO L226 Difference]: Without dead ends: 313 [2021-05-21 20:24:38,596 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-05-21 20:24:38,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-05-21 20:24:38,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-05-21 20:24:38,599 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) [2021-05-21 20:24:38,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 979 transitions. [2021-05-21 20:24:38,600 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 979 transitions. Word has length 25 [2021-05-21 20:24:38,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:38,600 INFO L482 AbstractCegarLoop]: Abstraction has 313 states and 979 transitions. [2021-05-21 20:24:38,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:24:38,600 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 979 transitions. [2021-05-21 20:24:38,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-21 20:24:38,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:38,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:38,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable723 [2021-05-21 20:24:38,601 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]=== [2021-05-21 20:24:38,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:38,601 INFO L82 PathProgramCache]: Analyzing trace with hash 151765885, now seen corresponding path program 720 times [2021-05-21 20:24:38,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:38,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967862547] [2021-05-21 20:24:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:38,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:38,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967862547] [2021-05-21 20:24:38,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967862547] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:38,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:38,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 20:24:38,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627163865] [2021-05-21 20:24:38,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 20:24:38,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:38,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 20:24:38,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-21 20:24:38,698 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) [2021-05-21 20:24:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:38,723 INFO L93 Difference]: Finished difference Result 312 states and 978 transitions. [2021-05-21 20:24:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 20:24:38,723 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 [2021-05-21 20:24:38,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:38,723 INFO L225 Difference]: With dead ends: 312 [2021-05-21 20:24:38,723 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 20:24:38,723 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 [2021-05-21 20:24:38,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 20:24:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 20:24:38,723 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) [2021-05-21 20:24:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 20:24:38,723 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-05-21 20:24:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:38,724 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 20:24:38,724 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) [2021-05-21 20:24:38,724 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 20:24:38,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 20:24:38,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable724 [2021-05-21 20:24:38,725 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 20:24:38,727 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 08:24:38 BasicIcfg [2021-05-21 20:24:38,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 20:24:38,728 INFO L168 Benchmark]: Toolchain (without parser) took 142871.02 ms. Allocated memory was 354.4 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 333.4 MB in the beginning and 1.2 GB in the end (delta: -909.9 MB). Peak memory consumption was 114.5 MB. Max. memory is 16.0 GB. [2021-05-21 20:24:38,728 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 354.4 MB. Free memory is still 334.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 20:24:38,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.21 ms. Allocated memory is still 354.4 MB. Free memory was 333.4 MB in the beginning and 331.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 20:24:38,728 INFO L168 Benchmark]: Boogie Preprocessor took 12.36 ms. Allocated memory is still 354.4 MB. Free memory was 331.9 MB in the beginning and 331.1 MB in the end (delta: 850.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 20:24:38,728 INFO L168 Benchmark]: RCFGBuilder took 211.16 ms. Allocated memory is still 354.4 MB. Free memory was 330.9 MB in the beginning and 320.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-05-21 20:24:38,728 INFO L168 Benchmark]: TraceAbstraction took 142612.93 ms. Allocated memory was 354.4 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 319.9 MB in the beginning and 1.2 GB in the end (delta: -923.4 MB). Peak memory consumption was 99.8 MB. Max. memory is 16.0 GB. [2021-05-21 20:24:38,729 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 0.15 ms. Allocated memory is still 354.4 MB. Free memory is still 334.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.21 ms. Allocated memory is still 354.4 MB. Free memory was 333.4 MB in the beginning and 331.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.36 ms. Allocated memory is still 354.4 MB. Free memory was 331.9 MB in the beginning and 331.1 MB in the end (delta: 850.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 211.16 ms. Allocated memory is still 354.4 MB. Free memory was 330.9 MB in the beginning and 320.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 142612.93 ms. Allocated memory was 354.4 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 319.9 MB in the beginning and 1.2 GB in the end (delta: -923.4 MB). Peak memory consumption was 99.8 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: 142446.6ms, OverallIterations: 725, TraceHistogramMax: 1, EmptinessCheckTime: 1391.7ms, AutomataDifference: 48505.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 458.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 60270 SDtfs, 75844 SDslu, 133269 SDs, 0 SdLazy, 25766 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14641.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5775 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 5045 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 73436.8ms 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: 26157.9ms AutomataMinimizationTime, 725 MinimizatonAttempts, 806803 StatesRemovedByMinimization, 714 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 167.7ms SsaConstructionTime, 404.5ms SatisfiabilityAnalysisTime, 63406.0ms 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...